MADE BY DR. ANTONIO RAIMONDI IN PERU. 2t9 



Figure. Magnified to twice natural length. 



Locality. Broken from the same block with the preceding. 



P. AMPLA, n. s., PI. 40, fig. 1. 



Shell large, unusually short and broad, spire elevated; whorls about six C?), 

 flattened on top, and convex in the middle ; suture channelled ; aperture propor- 

 tionately small, oblique, equally broad above and below. 



Figure. Natural size. 



Locality. Between the River Chonta and the village of Banos ; Prov. of Hua- 

 malies; apparently Cretaceous. 



Remarks. There is but a single cast of this species in the collection, showing 

 nothing of the surface ; but the outline of the shell is so strongly characteristic, 

 that I have not hesitated to name it. Its high spire and broad whorls are 

 sufficient to separate it from every species I have ever encountered. The details 

 of surface about the umbilical region are destroyed, but the cast shows enough to 

 demonstrate that the shell was nearly imperforate, and that the inner lip was but 

 thinly encrusted. 



This is apparently the shell figured in Wilkes' Expedition Eeport, PI. 15, fig. 

 3a, b, under the name of " Turbo sj). 1" 



TURRITELLA. 

 T. Raimondii, n. s., PI. 40, fig. 2. 



Shell long, slender, many whorled; whorls flattened on the sides, and marked 

 by four beaded ribs, the upper one of which forms the upper margin of the whorl; 

 between these are concave interspaces, marked by fine elevated lines ; the lower 

 angle of the body whorl is marked by a plain, sharp, linear rib, which, in the 

 preceding volutions, forms the sutural margin. On the under surface of the last 

 whorl there is a second plain rib of equal size, parallel with the first, and three 

 or four smaller, between which are others still finer. Under surface of body whorl 

 slightly concave. Outer lip broadly and sub-angularly emarginate in the middle, 

 and produced below. 



Measurements. Diameter, 0.2 in. Total length probably about 1.5 to 2.0 inch. 



Locality. From the Liassic (?) coal mine of Pariatambo. 



Remarks. Associated with the fragments from which this species is described, 

 is another single piece of three volutions, which differs from the typical form in 

 the same manner as occurs in other beaded Turrifellas, markedly so in the case of 

 T. seriatim-granulata, Roem., of the Texan Cretaceous. The entire surface is 

 covered with coarsely beaded ribs, six in number, so closely placed as to leave no 



