TERTIARY MOLLUSCA. 115 



Cypraea species. 



Besides Cyprcea anguillana, two species of Cyprcea occur at Crocus 

 Bay, Anguilla. One is represented in the collection by a single crushed 

 specimen with an ornamentation of raised spiral lines resembling the 

 sculpture of Ovula multicarinata Dall. It was found at station 6967. 

 The other, a large globose form preserved only as casts, is abundant 

 and occurs also in Cuba. 



Localities. Crocus Bay, Anguilla, stations 6893, 6894, 6966, 6971, 

 Vaughan; Consolacion del Sur, Vento, and Calabazar, Cuba, stations 

 3474, 4290, 4291, Wren. 



Geologic horizon. Oligocene. 



Cyprasa, indeterminate species. 



One indeterminable cast. 



Locality. Northwest side of St. Jean Bay, St. Bartholomew, station 

 6925, Vaughan. 



Geologic horizon. Upper Eocene. 



Strombus species. 

 (Plate 2, Figures 5 a, 6.) 



Casts of a huge species of Strombus with a moderately high spire 

 have been found at Crocus Bay, Anguilla. The largest specimen ex- 

 ceeded 20 cm. in altitude and 15 cm. in diameter. Smaller specimens 

 about 8 cm. in altitude, have a very low spire and long tubercles and 

 probably represent a different species. The figured specimen, measur- 

 ing 38 mm. in altitude, probably belongs to a third species. 



A Strombus occurs in the Oligocene of Santiago, Cuba, station 5255. 



Locality. Crocus Bay, Anguilla, stations 6894, 6965, Vaughan. 



Geologic horizon. Oligocene. 



Figured specimen. U. S. Nat. Mus. No. 166983. 



Orthaulax pugnax (Heilprin). 

 (Plate 2, Figures 3, 4.) 



Wagneria pugnax Heilprin, Trans. Wagner Inst., vol. I, p. 106, plate 15, figs. 36, 36a, 1887. 

 Orthaulax pugnax Dall, Trans. Wagner Inst., vol. Ill, p. 170, plate 8, figs. 5, 8, 1890. 

 Orthaulax pugnax Dall, U. S. Nat. Mus. Bull. 90, p. 87, plate 15, figs. 5, 10, 1915. 

 Orthaulax pugnax Dall, Proc. U. S. Nat. Mus., vol. 51, p. 509, 1916. 



The following is the original description of this species. 



"Shell irregularly oval, obconical, flattened, the flattened appearance being 

 due to three irregular swellings or knobs, one of which immediately adjoins 

 the anteriorly-directed fissure of the aperture; aperture narrow, projected 

 forward (in its upper course) as a closely compressed fissure, which in a 

 crescential curve ascends to within a comparatively short distance of the 

 apex of the spire ; outer lip? (broken in specimen) ; inner lip largely developed, 

 completely concealing the whorls of the spire, and duplicating for a very con- 

 siderable extent the outer lip; spire freely enclosed in a pointed superstructure, 

 or dome, built over it by an extension of the mantle; surface covered with longi- 

 tudinal lines of growth, which extend continuously from the apex to the base. 



"Length (of imperfect specimens, lacking probably upward of an inch), 2.7 

 inches; width, 1.75 inches." 



