375 Dominican Fossils — Maury i i i 



the extremes are unlike in aspect. I have designated our shells 

 which resemble the latteras P. moniliferum reclusum Guppy. 

 B oth forms occur at Bowden. 



Localities. — (Exp'd '16) P. moniliferum, Zones H and I, 

 Rio Cana at Caimito; Zone G, Rio Gurabo at Los Ouemados; 

 Bluff 3, Cerado de Mao; P. monilifertim reclusum, Bluff 3, Cer- 

 cado de Mao. 



Subgenus Cypr^cassis Stutchbury 



Cyprcecassis testiculus Linne 



Cyprcecassis testiculus L,inn6Jide Gabb, Trans. Amer. Phil. Soc, vol. 

 15, p. 222, 1S73. 



"We have a specimen from Gabb of this shell. The recent 

 range is from the Antilles to Hatteras. 



Genus Sconsia Gray 

 Sconsia Icevigata Sowerby 



Plate 19, Figure 2 

 Cassidaria Icevigata Sowerby, Quart. Jour. Geol. Soc. London, vol. 6, 



p, 47, pi. 10, fig. 2, 1849. 

 Cassidaria sublcevigaia Gwppy, Idem, vol. 22, p. 287, pi, 27, fig. 9, 1866. 

 Cassidaria Icevigata Guppy, Geol. Mag. London, p. 439, 1874; Quart. 



Jour. Geol. Soc, London, vol. 32, p. 525, 1876. 

 Sconsia Icevigata Brown and Pilsbry, Proc. Acad. Nat. Sci. Phila., p. 



356, 1911. 

 We have a large series of all ages and sizes of this fine 

 species, exhibiting all gradations from smooth to striate. Among 

 them are specimens exactly like Sowerby's Icevigata and Guppy' s 

 Jamaican sublcevigata. I have vainly attempted to satisfactorily 

 separate out the latter as a variety. 



Only three living species are known. Of these, 5. barbu- 

 densis Higgins and Maratt, dredged off Barbuda, seems the near- 

 est to the fossil, and its possible descendant. 

 S. Icevigata occurs also at Gatun. 



Localities. — (Exp'd '16) Zones A, B, D, E, F, Rio Gura- 

 bo at Los Quemados ; Bluff 1, Cercado de Mao. (Abundant.) 



