642 



rotundat&j albida, castaneo radiata ; lunula et area dorsali pur- 

 pureis ; intus sub urubones et ad impressiones laterales purpureo 

 trimaculata. 



The hinder side is not quite so acuminated as in C. Hebrcea, 

 and inside there are three broad purplish spots in each valve, one 

 under the umbones, and one covering each lateral muscular im- 

 pression. The dorsal area and lunule are both tinged with 

 purplish-brown. 



Pasacao and Catbalonga, Island of Samar, Philippines. Cuming. 



103. Cyther^ea castrensis (pi. cxxxiv. f. 151, 152, 153, 

 154), Linnceus (Venus castrensis). Var. Venus australis et 

 Venus Lorenziana, Chemn. 



Cyth. testa crassa, rotundata, subdepressa, lsevi, ad latera 

 concentrice subsulcata; albida, lineis vel maculis angulatis plus 

 minus suffusis picta, nonnunquam griseo nebulata; latere antico 

 breviusculo, rotundato, lunula distincta, subtumida ; latere postico 

 subquadrato ; umbonibus et margine dorsali elevatis ; intus pallii 

 impressione integra. 



Shell thick, flattish, rounded, smooth, slightly grooved at the 

 sides, particularly the anterior; whitish, with angular lines or 

 spots more or less spread, and sometimes with greyish cloudy 

 colouring ; anterior side rather the shorter ; the upper part rather 

 excavated, and the lunule tumid ; posterior side rather squared, 

 with the umbones and dorsal margin rather raised ; no sinus in 

 the pallial impression. 



" Indian Ocean," Lamarck. Fig. 153, 154 are from specimens 

 brought by Mr. Cuming from the Philippine Islands ; fig. 153, 

 from Mr. Gubba's collection, may be taken to represent the 

 Australian variety. 



104. CytherjEa ornata (pi. cxxxiv. f. 149), Lamarck, 

 Anim. s. vert. Cjjth. no. 32. Var. C. picta, Lamarck, no. 33. 

 V. castrensis, var., nonnul. 



Cyth. testa C. castrensi simili, sed magis obliqua, postice sub- 

 acuminata ; lineis elongatis, suffusis, et obliquis ; sulcis nullis. 



Shell more oblique than C. castrensis, quite smooth, the hinder 

 part more sloping and acuminated, the colouring in lines spread 

 at one side and very obliquely angulated. 



Philippines. Cuming. 



105. Cyther/EA hieroglyphica (pi. cxxxiv. f. 150), Conrad, 



