308 CATALOGUE OF THE SPECIES OF 



centric ridges, crossed by some obscure curved grooves on the ends. 

 Lunule lanceolate, brown lined, inside rosy white. Margin entire. 

 — My collection. 



Somewhat like C. scripta, but rather more convex, striated, and 

 umbo regular, not flattened. See also Venus caliste, Gmel. from 

 Schrcet Einl t. 8, f. 8. 



Dosina (Gray). 



Shell ovate ; hinder hinge tooth entire, anterior lateral teeth 

 small, rudimentary syphenal inflection small. 



* Anterior lateral tooth in left valves large. 



Dosina Lamarckii, Venus reticulata, var. 2, Lamk. V. subros- 

 trata, Wood, Supp.fig. 7, Ency. Meth, t. 267, f- 7, Chemn.vi. f. 306. 

 V. subrostrata of Lamarcks is a different species. 



Dosina casina, Venus casina, Lamk. Lin. Trans, viii. t. 2, f. 1. 

 Venus Rasterucii, Payraud. 



Dosina rugosa, Venus rugosa, Gmel. V. rigida, Dilwyn. 



Dosina cingulata, Venus cingulata, Lamk. Schroet. Eirl. t. 8, 

 f. 6, 309, Africa. 



Do\sina Zelandica, Gray, Yates' New Zealand, 309. 



** Anterior lateral tooth small, sometimes obliterated. 



Dosina veerrucosa, Venus veerruicosa, Linn. V. Lemanii, Paraud. 

 Dosina reticulata, V. reticulata, Linn. V. corbis, Lamk. 

 Dosina puerpera, V. puerpera, Linn. 



Dosina Listeri, V. puerpura var., Linn. Sow. Gen. f. Ency. 

 Meth. t. 278, f. 2. 



B. Foot broad, lunate, inferior. Shell orbicular, solid, com- 



Arthemis (Poli.) 

 (Orbiculus, Mergle ; Assa, Leach, Risso. ; Exolea, Brown.) 



Shell orbicular ; edge entire. Anterior hinge tooth of the left 

 valve rudimentary Syphonal inflection angular, ascending, acute. 



Aiihcnds excitsa, Venus excisa, Clicum. vii., f. 400-401. 



