158 



<©enu0 x 



VENUS. 



SHELL BIVALVE, WITH THE FRONT MARGIN OF ONE 

 VALVE INCUMBENT ON THE OTHER, AND A WELL 

 DEFINED IMPRESSION ON BOTH SIDES. 



Subdivisions. \ 



With the anterior depression spinous, or 



toothed on the margin. 

 Somewhat heart-shaped. 





*** Sub-orbicular. 



###* 



Sub-oval, and slightly angulated on the ante- 

 rior side. 



# With the anterior depression spinous, or toothed 

 on the Margin. 



dione. 1. Shell somewhat heart-shaped, trans- 

 versely ribbed, with a double row of spines 

 on the anterior slope. 



Venus Dione. Linnaus Si/st. Nat. p. 1128. Born. Mm. 

 p. ob. and Vign. at p. 51. f. a. Chemnitz, vi. p. 282. t. 

 27. f. 271 to 273. Schroeter Eint. iii. p. 109. Barbut 



+ The following of Gmelm's species appear to me to be undeserving of 

 notice. Venus afra, p. 3295. albicans, p. 3290. amethystina, p. 3281. argentea 

 p. 3295. aurantia, p. 3290. Bajana, p. 3269. Bengalensis, p. 3288. Candida, p 

 3290. carnea, p. 3281. cornea, p. 3291. donacina, p. 3295. eburnea, p. 3292 

 fa&ciutu, p. 3281. fulva, p. 3290. guttata, p. 3291. holosericea, p. 3290. ltalica 

 p. 3289. turns, p. 3*91. lineata, p. 3291. lucida, p. 3292. Macassarica, p. 3290 

 maculosa, p. 3291. nivea, p. 3292. mix, p. 3289. punctulata, p. 3281. purpuras 

 cens, p. 3288. pusilla, p. 3288. rostrata, p. 3280. rufesceas, p. 3291. spadir- 

 p. 3288. subviridis, p. 3280. variegata, p. 3281. virens, p. 3291. vir^ala, p. 32 

 virginka, p. 3294. F. imbricata, p. 3277. is Venerkardm imbrkata of La- 

 maick, and is a fossil species. 



