96 ANOLACIA, DIPSACCUS. 



A. MARGiNATA, Lam. PI. 39, figs. 44-48. 



Yellowish or gray, a white hand below the sutures, maculated 

 with orange-brown, a row of maeulations above, and another on 



the fasciole. Length, l-5-l*T5 inches. 



Australia, Tasmania. 



A, monilifera^ Reeve (fig. 45), A. lineata, Kiener (fig. 46), A. 

 ohlonga^ Sowb. (fig. 47) and A. obesa, Sowb. (fig. 48), are all 

 young shells of A. marginota, as the specimens before me exhibit * 

 all these variations in form. The last-named is said to occur 

 also at the Cape of Good Hope. 



A. ELONGATA, Gray. PI. 39, fig. 49. 



Thin, white, sutural band ivory-white, columella not plaited. 



Length, 2*25 inches. 



Torres Straits, N. Australia. 



A. DiMiDiATA, Sowb. PL 39, fig. 50. 



Rather thin, transparent white, sutural band, which is very 



broad, opaque white. Length, '9 inch. 



Red Sea. 



I am not acquainted with this species ; it looks as though it 



might be the young of A. elongata, Gray. 



Subgenus Anolacia, (rrav. 



A. Mauritiana, Sowb. PL 39, figs. 51-53. 



Shell ovate, thin, spire depressed, bod^'-whorl shouldered, 

 aperture wide, columella scarcely plaited, outer surface closely 

 but lightly covered with revolving strife ; yellowish white to 

 orange-brown. Length, l-t5-2*25 inches. 



Madagascar, Mauritixis, Australia. 

 ' This is the A. torosa, Meuschen, according to Sowerby, a name 

 under which it is quite as well known as the one I have adopted. " 

 A. scapheMa, Sowb. (fig. 52), and A. aperta, Sowb. (fig. 53), are 

 miniature shells of this species. 



Sibgenus Bipsaccas, Klein. 



A. GLABRATA, Liuu. PL 39, fig. 54. 



Yellowish white to orange, white-bordered at the sutures and 

 on the supra-fasciolar groove, columella and callus white. 



Length, 2-3 inches. 



West Indies. 



