Shell oval, irregularly striated, very ventricose, of an orange 

 or pale yellow tint, with a broad purple band at the posterior 

 side, which is rather sloped and slightly squared ; anterior side 

 short, rounded, and with a very broad lunule, defined. 



The orange-coloured specimen is Mr. Sowerby's ; the other 

 was collected by Mr. Cuming at Albay, Island of Luzon, 

 Philippines. 



87. Cyther^a striata (pi. exxxii. f. ] 13, 114, 115), Gray? 

 in Analyst, 1838. C. citrina, Lam., CMnu, Conch. 111. ; Wood, &c. 



Cyth. testa C. citrina: simili, sed magis compressa, postice prope 

 marginem dorsalem subangulata; margine dorsali declivi, sub- 

 complanato. Nonnunquam occurrit alba. 



Figured in the 'Illustrations Conchyliologiques' as C. citrina 

 of Lamarck, but not agreeing so well with the description as the 

 one given above. This shell is more compressed than C. citrina, 

 with a sloping and somewhat angulated posterior dorsal edge. 



River Gambia. Mus. Cuming. 



88. Cyther^ea subinflata (pi. exxxii. f. 116), Sowerhy, jun. 



Cyth. testa, ventricosa, subrotundata, lsevi, fulva, prope um- 

 bones angulatim maculata, turn albo radiata; umbonibus elevatis, 

 inflatis ; latere postico rotundatim subquadrato ; latere antico 

 brevi, lunula distincta. 



Shell ventricose, rather rounded, smooth, fawn-coloured, the 

 umbones elevated, inflated, and marked with undulating lines; 

 hinder side slightly squared; front side rounded, short, with 

 defined lunule. 



LocaUty unknown. Mus. Bowerly. 



89. CytheRjEA inelata (pi. exxxiii. f. 127,128), 8merly,jun. 



Cyth. testa, inflata, subovali, lsevi, alba, fusco radiatim variegata ; 

 latere postico subquadrato ; latere antico rotundato, breviusculo, 

 margine ventrali elevato ; lunula indistincta, subexcavata ; um- 

 bonibus subretrorsis. 



Shell ventricose, oval, smooth, white, with brown variegated 

 rays on the upper part. The umbones, wluch are inflated, have 

 a tendency to lean backwards ; the ventral margin is raised in 

 front to meet the rather hollow surface, which contains a broad 

 but rather indistinct lunule. 



Moluccas; also St. Nicholas, Island of Zebu, Philippines. 

 Cuming. 



