198 VENUS. 



Inhabits 



Linnaeus has not given any reference or habitat, and to the above 

 specific character only adds that the cartilage cleft is simple, 

 the posterior slope marked with a rhombical excavated im- 

 pression, and the margin very entire. 



borealis. 90. Shell sub-orbicular, with transverse 

 membranaceous erect very remote striae. 



Venus borealis. Linnaus Syst. Nat. p. 1 J 34. Chemnitz, 

 vii. p. 26. t. 39. f. 412 to 414. ? Schroeter Einl. iii. p. 

 143.? Gmelin, p. 3285. ? 



Inhabits the coasts of Europe. Linnaus. 



In addition to the above character, Linnaeus says that this shell 

 is white, angulated, and straight, as though truncated on the 

 cartilage side, and has unequal membranaceous striae ; he has 

 referred only to Lister Anion. Ang. t. 4. f. 23., which is 

 Mactra piperata, and does not answer the description. 

 Chemnitz under this name has figured a shell which he de- 

 scribes to be sub-orbicular, flattish, transversely striated, 

 coated with a reddish brown epidermis, always decorticated 

 at the umbones, and truncated at the posterior as well as the 

 anterior slope. Mr. Donovan, on the other hand, considers 

 V. spuria to be this species. 



aculeata. 91. Shell sub-orbicular, nearly equila- 

 teral, with elevated acute tuberculated longi- 

 tudinal ribs, and the margin crenated. 



Venus aculeata. Gmelin, p. 3293. 



Venus, No. 147- Schroeter Einl. iii. p. 200. t. 8. f. 13. 



Inhabits 



Shell about seven or eight lines long, and the length and 

 breadth are very nearly equal ; the colour is said to be some- 

 times uniformly red like the blossom of a peach, but fre- 

 quently white striped with brown ; anterior depression mi- 

 nute, and the hinge with two primary teeth in each valve. 



pectinata. 92. Shell sub-orbicular, gibbous, with 

 longitudinal nodulous ribs branched at the 

 anterior end ; margin toothed. 



Venus pectinata. Linnaus Syst. Nat. p. 1 135. Born 

 Mus. p. 74. Chemnitz, vii. p. 28. t. 39- f 415 and4l6. 

 Schroeter Einl. iii. p. 144. Gmelin, p. 3285. 



Lister Conch, t. 313. f. 149- Rumphius, t.43. f. D. Pe- 



