ARCA. 243 



Venus, No. 87. Schroeter Einl. hi. p. 181. 



Le Vovan. Adanson Senegal, p. 253. t. IB. f. 10. 



Bonanni Rec. 2. f. 62, and Kirch, f. 6l. 



Inhabits the coasts of Portugal. Bonanni. Goree and Cape 

 Verd. Adanson. 



Shell about an inch and a half long, and the length and breadth 

 are equal ; it may be distinguished from the foregoing species 

 by its more approximated summits, which are curved to- 

 wards one side, and by being perfectly orbicular ; it is thin- 

 ner than A. decussata, and has the slopes more rounded than 

 in A. izquilatera. 



script A. 39. Shell orbicular, convex, with decus- 

 sated striae, and transverse zic-zac lines ; 

 summits curved obliquely ; margin crenated. 



Area scripta. Born Mus. p. 93. t. 6. f. 1. Bruguiere 



Enc. Meth. p. 117. 

 Area pilosa Var. Gmelin, p. 3314. 

 Area, No. 25. Schroeter Einl. iii. p. 289. 

 Lister Conch, t. 246. f. 80. Enc. Meth. t. 31 1. f. 8. 

 Inhabits the coasts of St. Domingo. Bruguiere. 

 Shell about two inches in diameter, and we have the high au- 

 thority of Bruguiere for considering it a distinct species, al- 

 though Maton and Racket, as well as Gmelin, have quoted 

 Bom's figure for a Variety of A. pilosa ; it is white, marked 

 with delicate transverse yellowish zic-zac lines nearly in the 

 same manner as Venus scripta. 



nummaria. 40. Shell orbicular, slightly eared, 

 nearly smooth, and minutely striated trans- 

 versely ; summits incurved, and the margin 

 crenulated. 



Area nummaria. Linnccus Si/st. Nat. p. 1 143. Chemnitz, 

 vii. p. 239. t. 58. f. 572. Gmelin, p. 3314. Bruguiere 

 Enc. Meth. p. 118. 

 Area pectmata Var. Gmelin, p. 3313. 

 Area, No. 23. Schroeter Einl. iii. p. 288. 

 Lister Conch, t. 239- f. 81. Klein Ost. t. 10. f. 41. Enc. 

 Method, t. 3 1 1 . f. 4. 

 Inhabits the Mediterranean. Limuzus. Coasts of Spain about 



Cadiz. Chemnitz. 

 Shell about half an inch in diameter, white, and marked with 

 undulated brown stripes or dots ; the sides project a little at 

 the terminations of the hinge, which gives them some re- 

 j> 2 



