28i Dominican Fossils — Maury 117 



Genus Trivia Gray 



Trivia globosa Gray 

 Plate 19, Figure 13, 

 Trivia globosa Gray, Sowerby's Thesaurus, Cypraea, figs. 429, 431. 

 Trivia globosa Dall, Bull. 37 U. S. Nat. Mus.,p 136, 1889; Trans. Wag- 

 ner Inst. Sci., vol. 3. pt. 1, p. 16S, 1890; Id. pt. 6, p. 1584, 1903. 



We have several specimens agreeing in form and size with 

 recent shells of T globosa but the furrow is not quite so deep 

 and the ribs are worn so as to appear double. This species is 

 living in the Antilles and is found as a fossil at Bowden. 



Localities. — (Exp'd '16) Zone I, Rio Cana at Caimito. 

 (Rare). 



Trivia islahispaniolce, n. sp. 

 Plate 19, Figure 14 

 Shell sub-pisiform, very ventricose, slightly produced and 

 notched anteriorly and with the lips, especially the outer, flaring 

 a trifle posteriorly, sharply sculptured with well defined ribs of 

 which there are about twenty-three on the outer and twenty on 

 the inner lip ; dorsal surface evenly convex with only the faintest 

 suggestion of a sulcus over which the ribs continue without any 

 interruption, aperture narrow. Length of shell 7, breadth 5, alti- 

 tude 5 mm. 



This shell resembes T. globosa but that species is smaller 

 and the dorsal furrow is sharply cut, extending almost to the ex- 

 tremities. 



Locality. — (Exp'd 'i6)Bluff 3, Cercado de Mao. (Very 

 rare. ) 



Trivia suffusa variety Sancti-Domi?iici, n; sp. 

 Plate 19, Figure 15, 

 Shell resembling T. suffusa but more convex, slightly pro- 

 duced and truncate anteriorly; outer lip somewhat elevated above 

 the last whorl and sub-angulate posteriorly; ribs fine, 35 on the 

 outer margin of the outer lip and 25 on the inner lip; dorsal fur- 

 row very straight and sharp on one shell, less sharply defined on 



Printed Mar. 31, 1917 



