36 MAZATLAN BIVALVES 
has found its way into British and Mediterranaen lists with- 
out sufficient authority. . 
T. striata, Chemn. (=angulosa, Gmel.,=leta Palt.= Don. Mar- 
tinicensis, Lam.=T. punicea, Turton, Dillw. &c.) hab. W. 
Indies Coasts of Guinea, and Rhode Island, U. S.; Chemn. 
T. simulans, C. B. Ad. had. Xipixapi in W. Columbia, sandy 
mud, 10fm.; Cwming.—Panama (1 valve), C. B. Ad—Mazat- 
lan: very rare; L’pool Col; rare, Havre Col—Guayaquil, 
Hinds. 
Tablet 117 contains 2 pairs and 1 valve, shewing variations. 
55. TeELLiIna ?Cuminei, Hanl. 
Proc. Zool. Soc. 1844, p. 59.—Sow. Thes. Conch. vol. i. p. 223, 
pl. 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. 
ffab.—Guacomayo, in coral sand, Cuming. Panama, extremely 
rare, C. B. Adams.— Mazatlan : fragments in shell washings, 
extremely rare; L’pool Col. 
56. TELLINA PEBURNEA, Hani. 
Proc. Zool. Soc. 1844, p. 61—Han!.in Sow. Thes. Conch. vol. 1. 
peed ipl. os... 
Tablet 119 contains a fragment with deep sulci and stout 
ribs, which may belong to this species. 
Hab.—Tumbez, (Peru,) in soft sandy mud, 5fm., Cuming.— 
? Mazatlan: in Spondylus washings, L’pool Col. 
57. P TELLINA REGULARIS, 7. s. 
?T. ¢. jun. suborbiculari, convexiusculd ; margine ventrali sub- 
recto, umbonibus prominentibus ; diaphand, alha ; tenuissime et 
confertim concentrice liratd ; liris acutis, interstitsis aut levihus 
aut huc et illuc lineis radiantibus vix decussatis ; flerurd nulla : 
ligamento miminw ; cardine dentibus cardinalibus 3, paululum 
divergentibus, lateralibus 2 distantibus, validis. 
An aberrant species, so regular in form that externally it 
would range better with Kellia. It wants the spoon-shaped 
