244 ASTRA LIUM. 



late, with concentric tuberculate lirte ; umbilical tract white, callous, 

 depressed ; aperture transversely dilated, subrhoniboidal, angulate. 



Alt. 65, diam. 95 mill. Japanese Seas. 



A rare species in collections. 



A. TAYLORiANUM E. A. Smith, 1880. PI. 63, fig. 31. 



Shell turbinate-conic, flattened below, imperforate, purple rose 

 colored, marked with indistinct and very oblique strigations above,, 

 below white ; spire short-conic, with rectilinear outlines ; whorl& 

 about 8, subconcave above, slightly convex, Avith a subsutural sub- 

 squamose carina, and encircled by numerous subequal granulose 

 lirse ; last whorl acutely carinated below the middle, slightly exca- 

 vated above and flat below the carina ; base white with an outer 

 zone of purple red, concentrically ornamented with series of gran- 

 ules ; umbilical I'egion with a white smooth callous, its margin stained 

 with yellow. Columella arcuate, white calloused." 



Alt. 40, diam. 49 mill. 



Habitat unknown. 



The original figure and description are given. 



It probably does not belong to Pomaulax. The operculum is 

 unknown. 



Subgenus Pachypoma Gray, 1850. 



Shell similar in form to Pomaulax, but umbilical tract scarcely 

 ribbed ; operculum oblong, narrow, the nucleus terminal ; outside 

 very convex, white, smooth, with a broad central convexity and ob- 

 solete narrow side ribs. 



Californian Province. 



I restrict this subgenus to A. inequale, the first species mentioned 

 by Gray in his description. A. ccelatum Gmel., usually classed here, 

 belongs to a wholly different section of the genus. 



A. inequale Martyn, 1784. PI. 57, figs. 51, 52. 



Shell conic, imperforate, rather solid, with a chestnut brown cuti- 

 cle, lighter beneath ; whorls 6-7, planulate above, sutures slightly 

 impressed, bordered below by a series of obliquely descending cor- 

 rugations, which are cut into granules by from one to five spiral 

 furrows ; periphery carinate, subspinose on the upper whorls, usual- 

 ly nearly smooth on body-whorl ; base nearly flat, concentrically 

 lirate, the lira^ more or less tuberculate, five or six in numbei', their 

 interstices regularly striate ; aperture subtriangular, white within. 



