(539 



with the dorsal edge rather elevated. This description will in- 

 clude the several varieties, which have been differently named : 

 Kg. 132, C. Mlmulata,~Brit. Mus. ; fig. 129, C. Lamarckii, Gray, 

 the chestnut rays nearly covering the shell, and only leaving white 

 rays; fig. 130, C. Kinyii, Gray (C. modesla, Philippi), with narrow 

 interrupted rays, in Mr. Hanley's cabinet, and also that of Mr. 

 Cuming (brought by Dr. Hornbeck from the island of St. 

 Thomas, West Indies) ; and fig. 131, rather longer than the 

 others and white, from Nicobar {Cuming). 



93. CytheUjEA pellucida (pi. cxxxvi. f. 190), Lamarck, 

 Anim. s. vert. Cyth. no. 43. 



Cyth. testa rotundata, ventricosa, tenui, lsevi, albida, maculis 

 fuscis angulatis seriatim radiata ; latere antico brevi, lunula parva, 

 indistincta, purpurea; latere postico subquadrato, margine dorsali 

 elevato. 



Shell rounded, rather ventricose, very thin, smooth, whitish, 

 with interrupted light-brown rays, and a little purple spot on the 

 lunule close to the umbones ; anterior side short, sloping ; pos- 

 terior side rather squarish, with the dorsal margin elevated. 



New Holland. Mus. Hanley. 



94. Cytheejea subpellucida (pi. exxxiii. f. 136), Sowerby, 

 junior. 



Cyth. testa subovali, ventricosa, tenui, lsevi, purpurascente- 

 grisea, maculis fuscis seriatim radiata ; latere antico brevi, lunula 

 indistincta ; latere postico subelongato, subquadrato, margine 

 dorsali declivi ; umbonibus proininulis. 



Shell resembling C. pellucida, but of a darker colour, more elon- 

 gated posteriorly and having the dorsal edge more sloping ; it has 

 not the purple spot on the lunule. 



Albay, Island of Luzon, Philippines. Cuming. 



95. CythektEA vamans (pi. exxxiii. f. 138, 139), Hanley, 

 Sp. of Shells, Wood's Suppl. pi. 15. f. 33. C. rubiginosa, PM- 

 lipfpi, Abbild. pi. hi. f. 2. 



Cyth. testa subovali, ventricosa, concentrice striata, albida, 

 pallide fulvo vel interruptim fusco radiata; latere antico brevi, 

 subacuminato, lunula magna, subcomplanata, distincta, ad um- 

 bones purpureo unipunctata ; latere postico vix quadrato; area 

 dorsali maculata, subcarinata ; margine ventrali rotundato. 



Shell oval, ventricose, concentrically striated, whitish, with 

 either pale-brownish rays or else sharp angular bright-reddish 



