36 MAZATLAN BIVALVES 



has found its way into British and Mediterranaen lists with- 

 out sufficient authority. 



T. striata, Chemn. ( angulosa, GmeL,=l8etaPult.=Don. Mar- 

 tinicensis, Lam. = T. punicea, Turton, Dillw. &c.) hob. W. 

 Indies Coasts of Guinea, and Rhode Island, U. S. ; Chemn. 



T. simulans, C. B. Ad. hob. Xipixapi in W. Columbia, sandy 

 mud, 10 fm. ; Cuming. Panama (1 valve), C. S. Ad. Mazat- 

 lan : very rare ; L'pool Col ; rare, Havre Col. Guayaquil, 

 Hinds. 



Tablet 117 contains 2 pairs and 1 valve, shewing variations. 



55. TELLINA ?CUMINGII, Hani. 



Proc. Zool. Soc. 1844, p. 59. Sow. Thes. Conch, vol. i. p. 223, 



pi. 58, f. 72. C. B. Ad, Pan. Shells, p. 281, no. 463. 



Tablet 118 contains 2 fragments which seem to present the 

 colours and markings of this species. 

 Hab. Guacomayo, in coral sand, Cuming. Panama, extremely 



rare, C. B. Adams. Mazatlan : fragments in shell washings, 



extremely rare ; L'pool Col. 



56. TELLINA PEBUENEA, Hani. 



Proc. Zool. Soc. 1844, p. 61. Hani, in Sow. Thes. Conch, vol. i. 

 p. 241, pi. 57, f. 91. 



Tablet 119 contains a fragment with deep sulci and^ stout 

 ribs, which may belong to this species. 

 Hab. Tumbez, (Peru,) in soft sandy mud, 5 fm., Cuming. 



? Mazatlan: in Spondylus washings, IS pool Col. 



57. ? TELLINA EEGULAEIS, n. s. 



? T. t.jun. suborbiculari, convexiusculd ; margine ventrali sub- 

 recto, umbonibus prominentibus ; diaphana, alba ; tenuissime et 

 confertim cpncentrice liratd ; liris acutis, interstitiis aut lavibv* 

 aut hue et illuc lineis radiantibus vix decussatis ; flexura nulld ; 

 ligamento minimo ; cardine dentibus cardinalibus 3, paululum 

 diver gentibus, lateralibus 2 distantibus, validis. 



An aberrant species, so regular in form that externally it 

 would range better with Kellia. It wants the spoon-shaped 



