685 



20. Tapes Belcheri (pi. cxlvii. f. 50, 51), 8owerhy,jun. 



T. testa ovali, subcompressa, concentrice leviter sulcata, pallide 

 fulva, griseo literata et maculis nigrescentibus triradiata; mar- 

 gine dorsali literato, subarcuato ; latere antico brevi ; lunula pur- 

 pureo-lineata. 



Formed like T. puUastra or T. virginea, of a sandy colour, let- 

 tered and radiated with grey, and very remarkable for the bright 

 purple lines on the lunule. 



Locality unknown. Specimen in Mr. Hanley's collection; 

 brought by Captain Belcher. 



21. Tapes sulcauia (pi. cxlvi. f, 30, 31, 32), Lamarck 

 (Venus), Anim. sans vert. No. 41. 



T. testa oblonga, subquadrata, flavida seu aurantia seu fulvo- 

 violascente, fulvo literata et radiata, planulatim sulcis postice 

 evanidis lirata ; latere antico brevissimo, declivi ; latere postico 

 elongate, truncate, angulato ; margine dorsali depresso, rectiusculo, 

 antice lunulato, declivi ; margine ventraH paululum arcuato. 



Oblong, with the anterior side short and sloping, the posterior 

 side angulated, long, and obliquely truncated ; the sulci between 

 the flattened ribs nearly disappear towards the hinder angle, where 

 the shell is nearly smooth. 



Moluccas. 



22. Tapes Deshayesii (pi. cxlvi. f. 34, 35, 36, 37, 38), 

 Hanky (Venus), Sp. of Sh. Appen. Suppl. pi. xvi. f. 85. 



T. testa T. sulcaria. simili, sed minore, postice vix angulata, 

 sulcis continuis, postice gradiformibus. 



Smaller and less angular than T. sulcaria, with the sulci con- 

 tinuous, and at the liinder part of the shell producuig step-like 

 ribs. In the typical variety the markings consist of lettering, 

 with two broad bands of darker tint, edged by white and yellow 

 rays, with dark spots. We figure several other varieties. 



PhiUppines. 



23. Tapes eecens (pi. cxlviii. f. 62, 63, 64, 65, Q%), Chemn. 

 (Venus), Couch, pi. 202, f. 1979. Venus radiata, Chemn. pi. 201, 

 f. 1971, 1972,1973. 



T. testa oblique subtrigona seu ovali, alba, griseo varie picta, 

 Isevigata, ad latera sulcata, umbonibus prominentibus ; latere 

 postico elongate, plus minusve acuminate ; latere antico rotundato ; 



