CONTRIBUTION TO THE PALEONTOLOGY OF TRINIDAD. s;> 



broadly and deeply sulcate between the carinae and the plications on the outer 

 lip are obsolete. 



The history of C. brevidentato, is rather confused. It was first mentioned 

 by Conrad 63 from the Claiborne sands, but was not figured for many years. In 

 1890, a shell specifically the same was described by Dr. Dall M as C. globosum 

 from the Oligocene of Chipola, Florida, and was figured in 1892. 6 * Dr. Ball's 

 figure 11, which is of a young Chipolan specimen, is very like the young Soldado 

 form. Yet, although the general type is the same, the Soldado shell shows 

 minor differences, as greater breadth of shoulder, more spinous and less rib- 

 like nodules and a less highly sculptured spire. Moreover, if we may assume the 

 fragment of the outer lip of the adult Cassis to be of the same species as the young 

 shells, it settles the question rather definitely. It is strongly plicate even in the 

 central part, while brevidentatum is described by Mr. Aklrich as smooth in the 

 center; and Dr. Dall says that the outer lip of globosum is feebly denticulate. 



For the above reasons the writer is disposed to regard the Soldado shell as a 

 different species but closely allied to C. brevidentatum (= globosum). 



The Soldado form is named in honor of Dr. R. J. Lechmere Guppy, of Port 

 of Spain, Trinidad. 



Locality .—Bed No. 8, Soldado Rock, Gulf of Paria, near the Serpent's Mouth. 

 Geological horizon. — Lignitic Eocene. 



Cassis togata White. 



figs. 13, 16, 1887. 



Museu Nac. do Rio de Janeiro, vol. VII. dd. 170-171. dI. XV 



White's original description— " Shell comparatively short; spire equal in 

 length to about one-quarter of the full length of the shell ; volutions five or more 

 in number, the last one large; those of the spire convex; their distal side closely 

 appressed against the preceding volution; each volution bearing from eight to 

 ten narrow, abruptly raised, longitudinal varices, which end at the small appressed 

 fold at the distal border of the volutions of the spire, but they reach the suture 

 upon the proximal border. These varices on the last volution extend forward 

 a little more than one-half its breadth, where they become obsolete. The sur- 

 face upon the anterior portion of the last volution is marked by coarse, revolv- 

 ing, raised lines; and sharp, close-set lines of growth are visible on well preserved 

 surfaces; aperture moderately large, ending in a short, slightly flexed canal at 

 the front, and at the maturity of the shell the outer lip became expanded both 

 laterally and posteriorly, its margin being everted and a little thickened, 



rounded at its postero-lateral portion, and bearing a shallow notch near the 

 anterior portion. 



"Length 29 mm., breadth of the last volution 16 mm." 

 Locality.— Maria Farinha beds, State of Pernambuco. 



• Jour. Acad. Nat. Sci. Phila., 1st ser., vol. VII, p. 146, 1834. 



* Trans. Wagner Inst. Sci., vol. Ill, pp. 161-162. 

 "Ibid., p. 262, pi. 20, figs. 6, 11. 



