Researches upon the Hydrobiinæ and allied forms; chiefly made upon Materials in the Museum of the Smithsonian Institution
Researches upon the Hydrobiinæ and allied forms; chiefly made upon Materials in the Museum of the Smithsonian Institution
复制标题
对 Hydrobiinæ 及相关形式的研究主要基于史密森尼学会博物馆的材料
DOI:
10.1080/00222936608679562
复制
发表时间:
1866
影响因子:
0.8
通讯作者:
W. Stimpson
中科院分区:
文献类型:
--
作者:
W. Stimpson
The memoir is mainly devoted to the subfamilies Hydrobiin6e and PomatiopMnce. Of the genera belonging to the former, extended descriptions, and excellent outline cuts illustrating the shell, anima}, dentition, &c., are given of the typical species ofAmnieola, Bythinella, and the new genus Fluminicola. Similar illustrations and a good description are given of the type (¢ lmnieola lapidaria, Say) upon which the genus Pomatiopsis and the subfamily Pomatiopsin~ e were founded. The latter type, although a true air-breathing mollusk, living habitually out of water, is shown to breathe by gills, and not, as would naturally be expected, by lungs. He remarks, however, that" it may be said to be amphibious, but only in the sense that Succinea and some other terrestrial mollusca are so; that is, it is capable of living for a long time under water." The foot of this type is also shown to be adapted, by a peculiar construction, to a gliding mode of progression in water, and to a stepping motion, aided by the rostrum, when on land.Further on, he gives an extended description of the subfamily Hydrobiince, with accurate diagnoses of each of the included genera, full references, synonymy, citations of types, &c. Of these genera, the following are new:--Tryonia, Stim., tbunded upon a new species; T. elathrata (probably extinct) from the Colorado desert; Pota-