CRETACEOUS FOSSILS. 121 



Locality : "With the preceding. 



Associated with this is another shell, having all of the essential characters of 

 this species, except that the tops of the whorls, instead of being convex, are sharply 

 angulated a short distance from the suture, with a plain surface, sloping from the 

 angle to the suture. To the outside of this angle, the side is more convex than in 

 the specimen figured. With but one specimen, and that somewhat mutilated, I 

 do not feel warranted in describing it as distinct, although a series will probably 

 prove it to be so. Figures c and d illustrate the relative outlines. 



ANGARIA, Bolt. 



(Delphinula, Lam.) 



A. ORNATISSIMA, 11. S. 

 PL 20, Fig. 78. 



SHELL turbinate ; spire high ; whorls six, sloping and subangu- 

 lar above; sides flat, under-surface convex; suture impressed, 

 linear, bordered by a slightly raised rim on the succeeding whorl. 

 Surface minutely cancellate by fine, thread-like, revolving and 

 oblique longitudinal lines, smaller than the interspaces; the 

 longitudinal lines commence at the suture and pass obliquely 

 backwards and downwards, crossing the whole whorl and run 

 ning up into the umbilicus ; the revolving lines are equally 

 placed over the whole surface, except in the umbilicus, where 

 there are but five of them. Mouth simple ; columellar lip faintly 

 thickened. 



Diameter, .45 inch; height, .43 inch; height of mouth, .26 

 inch. 



Locality: With the preceding; abundant. Also found at Tuscan Springs. 



PAL. VOL. i. 16 



