148 GEOLOGY AND PALEONTOLOGY OF THE WEST INDIES. 



Metis trinitaria Dall. 

 (Plate 14, Figures 2 a, 6.) 



Tellina biplicata Guppy, Proc. Geol. Soc., vol. 22, p. 588, 1866. (Not of Conrad.) 



Tellina biplicata Guppy, Proc. Sci. Assoc. Trinidad, p. 161, 1867. 



Tellina sagroe Guppy, Quart. Jour. Geol. Soc. London, p. 530, 1876. 



Tellina sagrce Dall and Guppy, Proc. U. S. Nat. Mus., 19, p. 329, 1896. (Not of d'Orbigny.) 



Metris trinitaria Dall, Trans. Wag. Inst., vol. 3, pt. 5, p. 1041, plate 46, fig. 24, 1900. 



The following is the original description of this species: 



"Shell anteriorly elongated and dorso-ventrally attenuated, the anterior 

 dorsal slope rapid, the anterior end rounded ; the disk mesially constricted, the 

 posterior end short, high, blunt, strongly folded; beaks high, surface sculp- 

 tured with numerous small, sharp, slightly elevated concentric lamellae, 

 which are closer towards the ends of the shell; interior with the pallial sinus 

 larger and higher in the left valve, about half confluent below, deep and 

 rounded in front. Lon. 52, alt. 41, diam. 19 mm., but reaching twice this size. 



"The peculiar anterior elongation and arcuate form of this species dis- 

 tinguish it clearly from the other American species. Guppy erroneously 

 identified it with a Miocene and also with a Pleistocene species, from both of 

 which comparison shows it perfectly distinct." (Dall, 1900.) 



Localities. Santiago, La Cruz, and Vento, Cuba, stations 3192, 

 3441, 3439, 4290, and 5255, Willcox, Vaughan, Black; also Trinidad; 

 Crocus Bay, Anguilla, stations 6894, 6966, Vaughan. 



Geologic horizon. Oligocene. 



Types U. S. Nat. Mus. No. 115660. 



Figured specimen. U. S. Nat. Mus. No. 167171. 



Cardium species. 



The genus Cardium is represented in the Anguillan fauna by casts 

 which I have been unable to identify with any described species. 



Locality. Crocus Bay and Sandy Hill, Anguilla, stations 6894, 6963, 

 6967, Vaughan; also (probably different species) Calabazar, Cuba, 

 station 4291, Wren. 



Geologic horizon. Oligocene. 



Lucina species. 



Large globose lucinas appear to have been rather abundant in the 

 Tertiary seas, but are preserved chiefly as casts which exhibit few 

 characters suitable for specific discrimination. Some of the localities 

 are given below. 



Localities. Quarries west of Smithfield Mill, Friedericksted, St. 

 Croix, station 6937; dimensions, alt., 100 mm.; long., 120 mm.; diam., 

 86 mm.; Vaughan. Crocus Bay, Anguilla, stations 6894, 6966; dimen- 

 sions, alt., 75 mm.; long., 84 mm.; diam., 60 mm.; Vaughan. Cala- 

 bazar, Cuba, station 4291; dimensions, alt., 103 mm.; long., 110 mm.; 

 diam., 70mm.; Wren. Also Vento, "E. C. A.," Fort Cabanas, Cuba, 

 stations 4290, 4292, 3465; Wren, Vaughan. 



Geologic horizon. Oligocene. 



