CERITHIOPSIS. 169 



Var. TUBERCULATA, Carp. 



Appears to differ from the European examples only in being 

 more robust. 



Vancouver's Isl. to Southern Coast of California. 



I have tried in vain to find characters of sufficient importance to 

 distinguish this from the type specifically. 



Var. TUBERCULOIDES, Carp. Fig. 22. 



Smaller than European examples with the tubercles farther 

 apart. Length, 3'75 mill. 



Southern California to Mazatlan. 

 Var. ALBONODOSA, Carp. 



Like the preceding, reddish brown, with whitish tubercles, the 4 

 nuclear whorls subcarinated. 



Mazatlan. 

 C. MINIMUS, Brusina. PI. 35, fig. 26. 



Pupoidal, embryonal whorls smooth, white, the others dark brown, 

 with three rows of granulations, base convex, spirally striate. 



Length, 3 mill. 



Europe, Madeira. 



Distinguished from the preceding species by its smooth, white 

 embryonal whorls, its smaller size, and rounded striated base. C. 

 neglecta, Weink., is a synonym. 



C. ATALAYA, Watson. PI. 35, fig. 28. 



Apical whorls 4, longitudinally finely ribbed, cut across by two 

 spiral threads near the bottom of each whorl ; normal whorls as in 

 C. tubercularis, body whorl with a circumbasal thread, within which 

 the base is radiatingly striated. Length, 6 mill. 



Madeira. 



Jeffreys considers this a variety of C. tubercularis. 



C. DIADEMA, Watson. PI. 35, figs. 30-32. 



Apex spirally striate, other apical whorls finely obliquely longi- 

 tudinally ribbed, becoming keeled below, and finally nodulous ; 

 normal whorls as in C. tubercularis, base smooth encircled by two 

 ridges, of which the outer one is nodulous. Length, 6'5 mill. 



Mediterranean ; Madeira. 



C. fibula, Jeffreys, and C. tiara (fig. 30) and C. Fayalemis, 

 Watson (fig. 32), are probable synonyms. Monterosato has referred 

 to a C. corona, Watson, and named a variety scalaris ; I find no 

 description of this species and think it probable that C. diadema 

 was intended. 



