CERITHIOP8I8. 169 



Var. TUBERCULA.TA, Ciirp. 



Appears to difier from the European examples ouly in being 

 more robust. 



Vancouver's Isl. to Sovthern Comt 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. PL 35, fig. 26. 



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

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



Length, 3 mill. 



Eurojie, Madeira. 



Distinguished from the preceding species by its smooth, white 

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

 neglecta, Weiuk., 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. Fayalensis, 

 Wati<on (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. 



