American Journal of Conchology, Band 1G.W. Tyron, 1865 |
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2d series Acad acute Adams Alabama American Anculosa angulate Anth Anthony aperture aperture small apex bands beaks belong Binney body whorl C.-Foss C.-J. A. N. Sciences Cabinet California carinate Catalogue Claib color columella Conchology conical Conrad convex Coosa River DeKay denticles described Description Description.-Shell diameter Dimensions.-Length distinct Eocene flattened fossil Fusus Gabb genera genus Geol GEORGE W Goniobasis Gould Hald Haldeman Helix horn-color inch inflated ISAAC LEA Jour Lea.-Cont Lea.-Proc Limniades Malacology margin Melania millimetres Moll Mollusca Muricida nacre narrow oblique operculum Oregon outer lip ovate periphery Physa plates Pleurocera posterior Rafinesque Reeve revolving lines rhomboidal ribs River Schizostoma Shells of Tert slightly smooth species specimens spire spire elevated spire obtusely Strepomatida striæ striate subgenus suture suture impressed synonym synonymy teeth Tenn thick thin tooth Tryon tuberculate umbilicus Unio valve ventricose Vicks volutions
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Seite 255 - Shell small and fragile; spire elevated; columella slender, slightly bent; aperture large, elongate, ovate or subelliptical ; volutions three, marked on the periphery by three distinct carinae or subangular revolving ridges, the upper one marked with closely arranged longitudinally elongate nodes, the others simple; entire surface marked by very fine revolving lines, which are somewhat fasciculate below the lower carina, there being three finer ones between each large one.
Seite 200 - Tho latter belongs to the British, and not to the N. England form. 129. Of the blendingof the temperate and tropical faunas on the peninsula of L. California we are still in ignorance. All we know is, that at Margarita Bay the shells are still tropical, and that at Cerros Island they are strangely intermixed.
Seite 105 - This shell does not seem to correspond with the genus to which I have for the present referred it; and, owing to the configuration of the base of the columella, if it is not a Melanopsis, it is probable its station will be between the genera Melania and Agathina* I propose for it the generic name of A.nculosa. He also remarks, in his subsequent description of M. subglobosa, " It is a second species of my proposed genus Anculotus
Seite 96 - Gill's paper redirected Prof. Haldeman's attention to the subject, which he had left unfinished in his investigations at an earlier period; and the result is the publication of a short but important paper in the Proceedings of the Academy of Natural Sciences, September, 1863, entitled, "On Strepomatidae as a Name for a Family of Fluviatile Mollusca usually confounded with Melania...
Seite 115 - Anculosa having a rounded aperture and a callous columella. " lo having a greater or lesser elongate channel or spout at the base. . " Lithasia having a callus on the columella above and below, and a notch at the base.
Seite 109 - the general form of a Pleurotoma and of a Melafusus, with a well-defined sinus or cleft near the top of the outer lip, while the inner, though thin, is somewhat thickened above." The other characters named by him are such as are generally considered rather specific than generic, and the pleurotomose cut in the outer lip, as applied to a fluviatile univalve, is altogether insufficient to indicate a new genus. The specimen alluded to by Swainson, and from which his generic description was drawn, was...
Seite 125 - River and branches claims thirty-three species, of which twenty-one appear to be confined to its waters. The Cumberland River contains four species identical with those of the Tennessee, and about a dozen that are not found in the latter stream. The Alabama River contains fourteen species, three of which seem to be peculiar to it. These species are generally confined, however, to those portions of the Coosa and branches that approach to East Tennessee. A few species also inhabit the Tombigbee, of...
Seite 69 - Observations on the Terrestrial Pulmonifera of Maine, including a Catalogue of all the species of Terrestrial and Fluviatile Mollusca, known to inhabit the State: BY ED.
Seite 110 - H. & A. Adams, and has not prevailed for this genus in America or Europe. I have, therefore, decided not to make use of it in this case. " Subsequently this genus has been noticed by various authors, and other names have been applied to it. In 1841 or 1842, Dr. JW Mighels sent me specimens of one species, under the name of Apella.
Seite 114 - The rnollusk, for which I propose this genus, was sent to me by Wm. Spillman, MD, of Columbus, Miss., and I have before me over a dozen specimens from a third to nearly an inch in length. The very great number of species of the genus Melania makes it desirable to eliminate any group, with characters sufficiently distinct to permanently recognize it. The very remarkable retrorse callus at the base of the column, causing a lateral sinus, is characteristic of this genus.