192 Nelson on Tertiary Mollusca of Peru. 



15 millim. ; breadth 48-45 millim. Second specimen measures : length 

 61'2 millim. ; length of spire 12*2 millim. ; breadth 42*2o millim. 



Cancellaria Bradleyi, sp. nov. 



Plate VI, figures 8, 9. 



Shell thick, ovate ; spire turreted, elevated, and acuminate, com- 

 posed of six convex whorls, slightly depressed above. Whorls sepa- 

 rated by distinct sutures, and marked by from 13 to 15 strong, nearly 

 equal ribs to each whorl, and four or five revolving elevations. 



Body whorl somewhat ventricose, convex ; ribs more distant and 

 accompanied on some specimens by lines of growth. Aperture oblong- 

 oval, prolonged into a short, open, and slightly reflexed canal. Outer 

 lip thick and smooth. Columellar lip covered by callus, almost 

 covering the umbilical region; furnished within the aperture with 

 two strong folds, the upper much the largest. Umbilical ridge strong 

 and rugose. 



Length 27*1 millim. ; length of spire 8*4 millim. ; breadth IB'VS 

 millim. 



Cancellaria Larkinii, sp. nov. 



Plate VI, figure 7. 

 A fifth species of Cancellaria has the spire elevated and turreted ; 

 whorls slightly depressed above. Sutures deeply impressed. Body 

 whorl ventricose, three-fourths the length of the shell ; ribs strong 

 above, but absent over the base of the whorl ; transverse ridges 

 strong and distinct. A row of strong, acute tubercles covers the 

 center of each upper whorl, and the point of greatest convexity of the 

 body whorl. Outer lip very thin, and furnished within with a few 

 strong teeth. Columellar lip with two nearly equal plaits, and a third, 

 quite indistinct one, below. Umbilicus small, covered by a deposit of 

 callus. Umbilical keel very strong. Canal short, open, and slightly 

 reflexed. Owing to the bad state of preservation of our specimens it 

 is impossible to give exactly the measurements or number of whorls. 

 Our most perfect specimen gives, for four whorls, these measurements : 

 length 27 millim. ; breadth 18 millim. A much larger specimen 

 measui'es (5 whorls) length 40-1 millim. ; breadth 23 millim. 



Strombus, sp. ind. 



This genus is represented by four specimens in the condition of casts, 

 which bear strong resemblance to the young of S. Peruviamis Swain. 

 Outline conical, reflexed below. The largest specimen has the outer 



