699 



70. Tapes tricolor (pi. cli. f. 153), Sowerby (Venus), Zool. 

 Proc. 1835, p. 41. 



T. "testa ovato-elliptica, crassiuscula, radiatim costellata, cos- 

 tellis decussatis; maculis interruptis, fuscis, irregularibus, radia- 

 tim dispositis ; margine dorsali medio subangulato ; impressione 

 cordiformi, antica parva ; intus violacea ; margine ventrali denti- 

 culato." 



More rounded and short than T. discors, with the colour beau- 

 tifully arranged in irregular rays of angular spots edged with dark 

 brown. I feel doubtful, however, as to the propriety of admitting 

 this species as distinct from T. discors. 



Puerto Portrero, Central America; sandy mud, at eleven to 

 thirteen fathoms. Cuming. 



71. Tapes grata (pi. cli. f. 152), Say (Venus), American 

 Conchology, pi. 36. 



T. testa T. discordi simili, sed magis rotundata, umbonibus 

 magis centralibus, maculis tessellatim dispositis. 



This shell is more broad and rounded than T. discors, the um- 

 boes are more central, and the colouring is arranged in spots so 

 as to give a tessellated appearance. 



West coast of Mexico. Say. 



72. Tapes straminea (pi. cli. f. 151), Conrad, ? 



T. testa T. grata simili, sed costellis radiantibus, medio partim 

 evanidis. 



The ribs, instead of being sharp in the middle of the shell as 

 in T. grata, are as it were worn out, and that in living speci- 

 mens. 



Locality unknown. 



