86 MAZATLAN BIVALVES 



has found its way iuto British and Mediterranaen lists with- 

 out sufficient authority. 



T. striata, Chemn. ( = angidosa, Gmel., = laeta Pult.=Don. Mar- 

 tinieensis, Lam. = T. punicea, Turton. Dillw. &c.) hob. ^Y. 

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



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

 mud, 10 fm. ; C«;h/»^.— Panama (1 valve), C. B. Ad. — Mazat- 

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

 Sinds. 



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



55. Tellina PCuMiNGii, Sanl. 



Pi'oc. Zool. Soc. 1844, p. 59.~Sow. Tlies. Condi, 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. 



Hah.— Gwacom&yo, in coral sand, Cuming. Panama, extremely 

 rare, C. B. Adams.— Mazaitlan : fragments in shell washings, 

 extremely rare ; L'pool Col. 



56. Tellina Pebfenea, JIanl. 



Pruc. Zool. Soc. 1841, p. 61.— Hani, in Sow. TJies. Coiich. 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. 



Hah.— Twmhcz. (Peru.) in soft sandy mud, 5 fm., Cuming.— 

 PMazatlan: in Spoudylus washings, L'pool Col. 



57. PTellina eegulaeis, n. s. 



fT. t.jun. suborbiculari, convexiusculd ; margine ventrali sub- 

 recto, umbonibus prominentibus ; diaphand, alba ; tenuissime ei 

 confertim concent rice lirafd ; I iris acuti.^, interstifiis aut Itevibus 

 aut hue et illuc lineis radiantibus vi.v decm^satis ; Jlexicrd nulla ; 

 hgamento minimo ; cardine dentihus cardinalihus 3, paululum 

 divcrgentihus, lateralihus 2 distantibus, validis. 



An aberrant species, so regidar in form that externally it 

 would range better with Kcliia. It wauts the spoon-shaped 



