EEPOllT ON THE LAMELLIBRANCHIATA. 103 



There are also specimens of this sj)ecies in the British Museum from the above 

 locality dredged during the voyage of the " Eattlesnake " in 7 fathoms on a sandy 

 bottom. The Challenger specimens are concentrically zoned with pink and cream colour, 

 intermingled here and there with narrow diaphanous stripes, and again others are 

 destitute of the pink bauds. On the other hand, the " Eattlesnake " examples are pinkish- 

 red, in some instances paler than others, or totally white, and at times varied with a few 

 pale rays, like the typical form described l)y Krauss. 



Telliiia [Angulus) vernalis, Hanley. 



Tellina vernalis, Hanley, Proc. Zool. Soc. Lond., 184-1, p. 111. 



TelUna vernalis, Hanley, in Sowerby's Thesaurus Concli., vol. i. p. 289, pi. Iviii. fig. 84. 



Tellina vernalis, SowerLy, Conch. Icon., vol. xvii. fig. 284. 



Tellina {Awjulus) vernalis, Romer, Conch. -Cab., ed. 2, Jlonogr. Tellina, p. 159. 



Tellina {Angulus) vernalis, H. and A. Adams, Genera Moll., vol. ii. p. 397. 



Habitat. — Amboina, in 15 to 20 fathoms (Challenger) ; Singapore (Hanley). 



This species is not quite so flattened as Tellina lux, rather more oblong, and has a 

 shorter and less concave ligamental sloj)e. It is perhaps also a trifle thinner, but has a 

 similar hinge, and the muscular scars and pallial sinus are very nearly alike in both 

 species. Tellina unifasciata, Sowerby, is also closely allied to the two species \mder 

 comparison, but is narrower and more acuminate behind than either. 



Tellina [Angulus'?) 7'homhoides, Quoy and Gaimard. 



Tellina rhomhoides, Quoy and Gaimard, Voy. " Astrolabe " Zool., vol. iii. p. 502, pi. Ixxxi. figs. 4-7. 

 Tellina rhomboides, Hanley, in Sowerby's Thesaurus, vol. i. p. 304, pi. Iviii. figs. 92, 96, 97. 

 Tellina rhomhoides, Sowerby, Conch. Icon., vol. xvii. fig. 114, «, h. 

 Tellina {Angulus) rhomboides, Etimer, in Couch.-Cab., ed. 2, p. 144, pi. xxxi. figs. 14-17 



(magnified). 

 Tellina dathrata (Quoy), Deshayes, Hist. Anim. sans Vert., ed. 2, vol. vi. p. 208. 

 Tellina dathrata, Hanley, Cat. Rec. Biv. Shells, p. 65 ; Suppl. pi. xiv. fig. 12. 

 ■Tellina {Peronella) imra, H. Adams, Proc. Zool. Soc. Lond., 1870, p. 789, pi. xlviii. fig, 6. 

 Tellina texlurata, Sowerby, Conch. Icon., vol. xvii. pi. xli. fig. 233, pi. xlv. fig. 233«. 

 Tellina lauta, Gould, Wilkes' Explor. E.xped., vol. xii. p. 408; Atlas, figs. 51i-51ib ; Otia 



Conch., p. 79. 

 Tellina compta, Gould, loc. cit., p. 406, figs. 575-5756 ; Otia Conch., p. 79. 

 Tellina silicida (Deshayes), Sowerby, Conch. Icon., vol. xvii. fig. 278, c, '/. 

 Tellina bifaria, Baird, in Brenchley's Cruise of the " Curagoa," p. 451, pi. xli. fig. 13. 

 Tellina caseus, Sowerby, Conch. Icon., vol. xvii. fig. 115. 



Hahitat. — Cape York, North Australia, in 3 to 1 2 fathoms, and Levuka, Fiji Islands,, 

 in 12 fathoms. 



This species is varialde somewhat as regards form and the fineness of the oblique 

 striae, but quite constant in tlie character of the hinge. This consists of two strongish 

 cardinal teeth in the right valve, the anterior being cleft at tlie top, and a single bifid one 



