NATICA. 27 



X. VARIABILIS, Kecluz. PL 7, fig. 57. 



Smooth, shining, rather solid ; yellowish white, covered with a 

 fine network of chestnut color, with a row of maculations near 

 the base, and an opaque white band overlaid with the reticula- 

 tions at the suture ; columellar callus tinged with deep chestnut, 

 and nearly filling the umbilicus. Length, 22 mill. 



Hab. unknown (Reeve); W. Africa (Marrat). 



Seems to be nearly related to N. imperforata, Gray. 



X. PAVIMENTUM, Rccluz. PL 7, figs. 38, 39. 



Yellowish white, with orange-brown flexuous markings or 

 spots, interrupted on the periphery by a broad light-bluish 

 band, on the middle of which is a spiral series of orange-brown 

 squarish spots ; columella filled with callus. Length, 10 mill. 



Philippines, Amboina. 



N. Cailliaudi, Recluz (fig. 39) is a mere variety of this species. 



X. PYGM.EA, Phil. PL 7, fig. 40. 



Whitish, covered by small chestnut-colored punctations, with 

 three obscure bands; umbilicus narrow, open. Length, 10 mill. 



Cape of Good Hope. 

 X. DILECTA, Gould. PL 7, fig. 41. 



Covered with a russet-colored epidermis, under which the 

 shell is ivory-white, reticulated with a very minute network of 

 rusty brown or fawn-color, leaving occasional white patches, and 

 with a series of chestnut-colored blotches, revolving on all the 

 whorls, near the suture; callus tinged with chestnut-brown, 

 nearly filling: the umbilicus. Length, 16 mill. 



? Mouth of the Rio Negro, Patagonia. 



X. ADAMSIANA, Dunker. PL 8, fig. 46. 



Olivaceous brown, with two lighter bauds covered with longi- 

 tudinal flexuous chestnut markings; umbilicus with central 

 entering callus ; suture slightly plicate ; interior of aperture 

 chestnut colored with two pale bands. Length, 23 mill. 



Japan. 

 X. MOQUINIANA, Recluz. PL 8, figs. 47, 48. 



Rather thin ; yellowish brown, with three series of chestnut 

 maculations, running together in adult specimens, with connect- 



