CERITHIOPSIS. 171 



C. PULCHELLUM, C. B. Ad. PL 35, fig. 38. 



Subcylindrical-pupoidal, whorls with two spiral ridges of rather 

 large nodules, of which the upper one is larger, and is doubled on 

 the lower whorls, anteriorly with two additional ridges, of which 

 the upper one is subnodulous ; whorls about 11, the lower one a 

 little contracted, terminating obtusely ; white, with a brown band 

 on the lower spiral row of tubercles. Length, 3'5 mill. 



Jamaica, Guadeloupe, West Indies. 



C. GUARANIAXUM, d'Orb. PI. 35, fig. 39. 



Shell brown, with four spiral rows of somewhat oblique tubercles, 

 base defined by a thread-like ridge. Length, 3 mill. 



Rio Janeiro, Brazil. 



C. STEJNEGERI, Ball. PI. 35, figs. 40, 41. 



Thin, purplish, with white nucleus and columella; nucleus 

 smooth, partly immersed, normal whorls 6, strongly sculptured, 

 rather rounded, sculpture consisting of three spiral series of tuber- 

 cles, separated by rather deep channels, anterior channel bordered ' 

 by the raised, convex, smooth base. Length, 5'5 mill. 



Alaska. 



Var. TRUNCATUM, Dall. Fig. 41. 



Nuclear whorls large, of a soft, almost fleshy consistency, break- 

 ing off in drying. 



This is probably a pathological condition of the species, as sur- 

 mised by Dr. Dall. 



C. COLUMN A, Carp. PI. 35, fig. 21. 



Purplish brown, with 9 normal, flat whorls, and distinct suture, 

 having a clathrate pattern of nodules formed by the crossing of 

 longitudinal ribs by three spiral ribs, base rounded, spirally ridged. 



Length, 8'5 mill. 



Vancouver's Isl. to Southern Coast of California. 



"Easily recognized, even in portions, by the 'strung-fig' pattern." 



C. PURPUREA, Carp. PI. 35, fig. 43. 



Upper half of whorls brown, or brownish purple, lower half 

 white or lighter brown, body whorl brown, with a white peripheral 

 band ; with three spiral series of nodules, base rounded, with spiral 

 line. Length, 7'5 mill. 



Califorrdd, 



