LIOTIA DUPLICATA, Adams. L. testá orbiculari; spirá depressa, anfractibus transversim et longitudinaliter costatis; costis transversis duabus, tuberculatis; anfractuum parte inferiori pland; umbilico amplo, perspectivo, crenulato. Hab. in insulis Philippinis. Shell orbicular; spire depressed, whorls transversely and longitu`dinally ribbed; transverse ribs two, tuberculated; the lower part of the whorls smooth; umbilicus very large, the other whorls visible within, margin crenulated. Hab. Cagayan, province of Misamis, Isle of Mindanao, Philippines. (Mus. Cuming.) LIOTIA NODULOSA, A. Adams. L. testá orbiculato-depressa; spirá complanata, transversim striatá, ultimo anfractu costis transversis duabus in medio puncto sulcatis et nodulis magnis subdistantibus instructis, infra serie punctorum circa regionem umbilicalem; apertura orbiculari, peristomate reflexo puncto fimbriato, umbilico patulo margine crenulato. Hab. in insulis Philippinis. (Mus. Cuming.) DELPHINULA CORONATA, Adams. D. testá subdiscoided, albá, nigro lineata; anfractibus rotundatis, supra, spinis squamaformibus subramosis nigricantibus sursum curvatis coronatá; anfractuum parte alterá spinis brevioribus nigris in seriebus dispositis; spirá plano-convexá. Hab. in littoribus Australiæ. Shell subdiscoid, white, with black lines; whorls rounded, coronated above with blackish subramose scale-like spines curved upwards, the other part of the whorls with shorter black spines arranged in parallel rows; spire plano-convex. Hab. Cape Upstart, North Australia, in crevices of rocks at low water; Jukes. (Mus. Cuming.) DELPHINULA EURACANTHA, Adams. D. testá subdiscoideá, albidd fusco rubroque variegata, anfractibus supra lævigatis, supernè angulatis, angulo spinis squamaformibus grandibus latis decurvatis ornato; anfractuum parte inferiori serie unicá spinarum et squamarum in seriebus parallelis dispositis ornatá; umbilico amplo, squamis muricatis armato, peromphalo nodoso. Hab. in insulis Philippinis. Shell subdiscoid, whitish varied with red and brown; whorls smooth above, angulated superiorly, the angle ornamented with large wide decurved scale-like spines; lower part of the whorl with a single series of spines and numerous parallel rows of scales; umbilicus wide, armed with muricated spines, margin nodose. Hab. Isle of Mindora, Philippine Islands; H. C. (Mus. Cum.) Like D. aculeata, Reeve; but the spinose processes are broad and deflexed, and there is a single row of large spines on the under part. DELPHINULA CALCAR, Adams. D. testá orbiculari, discoideá; spirá depressá, alba, anfractibus angulatis acutis, peripheriá serie unica spinarum radiatim stellatá, spinis triangularibus compressis prominentibus; anfractuum parte inferiore planá ; umbilico patulo, crenulato. Hab. in insulis Philippinis. Shell orbicular, discoid; spire depressed, white, whorls sharply angulated, periphery with a single series of prominent broad triangular compressed spines radiately disposed; lower part of whorls smooth; umbilicus wide, crenulated. Hab. Catanuan, province of Tayabas, island of Luzon, sandy mud, 10 fathoms; H. C. (Mus. Cuming.) A small species, partaking somewhat of the characters of D. stellaris, Adams and Reeve, but much more depressed, and the lower part of the whorls simple. March 26, 1850. W. Yarrell, Esq., V.P., in the Chair. :- The following papers were read : 1. ON A LEECH NEW TO THE BRITISH FAUNA. Mr. Hoffmann lately sent to the Zoological Gardens a living specimen of a very large leech which he had found near his house in the Regent's Park. It has been preserved in fluid, and now forms part of the Collection of British Animals in the British Museum. It proved to be an adult specimen of Trochetia subviridis, Dutrochet (Lamk. Hist. A. s. V. v. 523), well-figured in the 2nd edition of Moquin-Tandon's Monograph of Hirudines,' t. 4. It is a very interesting addition to the fauna. It is the giant of the family, this specimen being more than 7 inches long. 2. ON THE OCCurrence of Regalecus glesne at REDCAR, YORKSHIRE, IN 1850. BY J. E. GRAY, Esq., F.R.S. A specimen of this fish was cast ashore on Redcar Sands, Yorkshire, on Thursday, the 3rd of January 1850. "The fish was alive when found. Length without the tail-fin, which is wanting, about 11 feet; width at the broadest part, 12 inches; weight, 4 stone 10 lbs." It was salted and exhibited at Redcar. During the exhibition the rays of the dorsal and ventral fins were almost entirely destroyed, and it broke transversely into three nearly equal lengths on being moved from the sand. It was eventually sent to London, and now forms part of the Collection of British Animals in the British Museum. The specimen, when it arrived in London, agreed in general appearance and in all essential characters with the specimen from Cullercoats which was exhibited in London last year. Mr. Wrightson, who had the care of it at Redcar, considered, because it had no expanded forked tail, that the tail was wanting. 3. NOTE ON CALLICHTHYS AND ANABLEPS. The flesh of Callichthys, when cooked, is of a fine deep yellow colour, and in substance is somewhat cheesy or buttery on the tongue; it is very rich in flavour: no cleaning of the intestines appears to be necessary before preparation for the table. In the creeks by which the island of Mexianna is intersected, these fish literally swarm and keep the waters alive and in a state of constant disturbance. I have witnessed them crossing a log of wood, which was lying in the water and intercepted the passage, in such numbers that they quite concealed it from view; and the people, when they wanted a dish, were in the habit of going down to a favourable spot and picking them out with their hands, without going into the water. Anableps swims in small shoals with the eyes above the surface of the water, generally close to the shore, and so near together that I have shot twenty to thirty at a time by firing a gun among them; their flesh is very sweet, and not unlike a smelt in taste. 4. ON THE SPECIES OF MOLLUSCA COLLECTED DURING THE 1. On the Land-Shells collected during the Expedition. (Mollusca, Pl. IX.) Officers employed on a hydrographical survey have seldom time or opportunity for making an extensive collection of land-shells. In the assemblage of mollusks collected by Capt. Kellett and Lieut. Wood, there are twenty-eight species, of which eight are undescribed forms. These have been collected at various points between the coast of the Equador to the south and Vancouver Island to the north, the Gelepagos Islands, Pitcairn's Island, and the Sandwich Isles. Unfortunately, in consequence of the mixing of unlabeled specimens, the precise locality of several of the species cannot now be determined. Of the genus Helix there are nine species. Of these, H. Townsendiana, Nuttalliana and Columbiana are certainly from the neighbourhood of the Columbia river. Helix Kellettii and Pandora, both new, are probably from the same country, though the box in which they were contained was marked "Santa Barbara." Helix areolata bears no indication of its locality. Helix labyrinthus, variety sipunculata, is a very curious modification of H. labyrinthus, and, like its known near relations, comes from Panama. Helix ornatella (known also as H. Adamsi) was collected in Pitcairn's Island, where it had originally been observed. A single specimen of the common European Helix aspersa is marked "Santa Barbara," and probably owed presence, wherever it was found, to transport by Europeans. Of the genus Bulimus fourteen species were collected. Among the most interesting of these are seven species, two of them new, from its |