672 



gosa, elevatim striata; area ligamenti excavata; lunula ampla, 

 subobsoleta. 



White, with the shape rather tending to trigonal, with ronghish 

 riblets or raised stria? ; ligamental area sharply excavated ; lunulc 

 wide, rather indistinct. 



Nicobar Island, 



62. Artemis contusa (pi. cxliii. f. 70), Reeve, Conch. Icon. 

 Art. pi. vii. f. 38. 



Art. testa oblique subglohosa, crassa, albida, umbones versus 

 sublivida, conccntrice costellata, costellis complanatis ; area liga- 

 menti excavata, plana, ; lunula iinpressa, lata. 



Whitish, clouded with dull blue near the umboes, rather thick, 

 smooth, and obliquely gibbous, concentrically ridged ; the ridges 

 rather broad and Hat. The ligamental area angularly excavated, 

 and smooth. 



Point Cunningham, North Australia. Bring. 



Sect. 6. Edge of the dorsal area raised above the circum- 

 scribing line. 



63. Artemis alata (pi. cxliv. f. 73), Reeve, Conch. Icon, 

 pi. iv. f. 20. 



Art. testa alba,, subtevigata, alta, plana, ad latus posticum 

 sulco profundo alam forraante radiatim divisa; lunula suboblonga; 

 umbonibus parvis, subarcuatis. 



A nearly smooth, white, flat shell, remarkable for a radiating 

 groove at the hinder part, which separates a wing-shaped area 

 from the rest. As this may be equivalent to the raised liga- 

 mental areas in A. pubescens and A. striatissima, I place the 

 species with them, although otherwise very unlike. 



Locality unknown. In Mr. Cuming's collection. 



64. Artemis pubescens (pi. cxliii. f. 72), Philippi {Cy- 

 thema), Abbild. t. 8. f. 3. Art. caslata, Reeve, Conch. Icon, 

 pi. v. sp. 28. 



Art. " testa, subquadrato-orbiculari, lactea, striis transversis con- 

 fertis, versus utramque extremitatem paucioribus et lamellaribus 

 sculptti; lunula cordata, compressa, lineu profundissima circum- 

 scripta ; area lineari-lanceolata, lamellarum extremitatibus spince- 



