DONAX. 149 



strise ; anterior slope flattish, and its margin 

 spinous ; hinge with a lateral tooth on each 

 side. 

 Donax pubescens. Linnceus Syst. Nat. p. 1127. Chem- 

 nitz, vi. p. 251. t. 25. f. 248. Schroeter Eirrf. iii. p. 92. 

 Gme/in, p. 3262. 

 Rumphius, t. 43. f. F. Enc. Method, t. 260. f. 1. 

 Inhabits the coasts of Amboyna. Rumphius. Molucca Islands. 



Chemnitz. 

 Shell about three-quarters of an inch long, and fourteen lines 

 broad, and may be distinguished from D. Scortum, by a row 

 of strong spines along the margin of its anterior slope ; the 

 angular margin of the slope in D. Scortum is, however, ge- 

 nerally more or less armed with vaulted scales, and the shell 

 described by Born, with the name of D. pubescens, is cer- 

 tainly nothing more than a trifling Variety of that species. 



rug os A. 3. Shell wedge-shaped, gibbous, and 

 wrinkled at the anterior end, and the margin 

 crenated ; hinge without lateral teeth, and the 

 cartilage cleft ovate. 



Donax rugosa. Eintuzus Syst. Nat. p. 1127. Chemnitz, 

 vi. p. 254. t. 25. f. 250. Schroeter Einl. iii. p. 93. 

 Gmelin, p. 3262. Lamarck Syst. des Anim. p. 122. 

 Gualter, t. 89. f- F. Adanson Senegal, t. 18. f. 1. Seba, 

 iii. t. 86. f. 10. Knorr, vi. t. 28. f. 8. 

 Inhabits the Southern Ocean. Einnaus. Sandy shores of Se- 

 negal, especially about the mouths of the Niger. Adanson. 

 Coasts of America and Guinea. Gronovius. Mediterranean 

 and West Indies. Chemnitz. 

 Shell about three-quarters of an inch long, and an inch and a 

 quarter broad ; compressed, longitudinally striated, and 

 rugged at the truncated anterior end ; the colour is pale 

 purplish, with darker transverse bands, and the inside white 

 variegated with purple. 



'serra. 4. Shell wedge-shaped, with the anterior 

 end wrinkled, and the margin crenated ; 

 hinge without lateral teeth, and the cartilage 

 cleft oblong. 



Donax Serra. Chemnitz, vi. p. 257. t. 25. f. 251 and 252. 

 Donax grandis. Sola?ider's MSS. Callom's Cat. p. 47. 

 No. 869. 



