NO. 1110. PBOCEEDINGS OF THE NATIONAL MUSEUM. 327 



Oligoceiie of Jamaica, Veiidryes (Guppy, 2298). No. 107103, U.S.N.M. 

 Eesembles a small form of L. costata, Conrad. 



DIVARICELLA PREVARICATA, Guppy, new species. 

 (Plate XXX, fig. 4.) 



Suborbicular, inflated, margins minutely denticulate, surface divari- 

 cately sculptured. Length of shell, 8 mm. [(Jr.] 



Oligocene of Jamaica, Vendryes (Guppy, 2299). "So. 107102, U.S.KM. 

 Eesembles D. americana, C. B. Adams {=quadrisulcata, Orbiguy), but 

 is constantly smaller and weaker. 



CARDIUM SERRATUM, Linnxus. 



Oligocene of Jamaica, Vendryes (Guppy, 2300). No. 107101, U.S.N.M. 

 This small form is identical with the dwarfed form from deep water 

 (100 fathoms), which I named yariety syhariticum.^ The larger form 

 is also found in tbe I>owden beds. 



CLEMENTIA .' TiENIOSA, Guppy, new species. 

 (Plate XXX, fig. 8.) 



Snbtriangularly suborbicular, scarcely ventricose, concentrically 

 ribbed, the ribs rounded with concave sulci between them. Alt. 43, 

 Ion. 47 mm. [G.j 



Tertiary beds of Savaneta, Trinidad (Guppy, 2302). No. 107106, 

 U.S.N.M. The specimen is an internal cast, with the hinge line defective. 



SANGUINOLARIA UNIOIDES, Guppy, new species. 

 (Plate XXX, fig. 11.) 



Ovate oblong, slightly ventricose, smooth, with shallow, concentric 

 sulci and fine radiating stri«. Length 63, height 44 mm. [G.] 



Tertiary beds, Savana Grande, Trinidad, Guppy (2302). No, 107106, 

 U.S.N.M. A somewhat Unio-like shell of uncertain affinities. The 

 beds from which it came have yielded some other large bivalves whose 

 affinities have not been ascertained, partly on account of their imj)er- 

 fect condition. [G.J 



CORBULA DISPARILIS, Orbigny. 



Corbula disparilis, Orbigny, Moll. Cuba, II, 283, pi. xxvii, figs. 1-4, 1846. 

 C. phiUppii, E. A Smith, Chall. Rep., p 33, pi. vii, fig. 4, 1885. 

 C. operculata, Philippi, Zeitschr. Mai., V, p. 13, 1849. 



Oligocene of Jamaica (Guppy, 2295), and also recent in the Antilles. 



TEREDINA ?, doubtful species. 



Almost globular, anterior area finely closely laminose, posterior area 

 subequal, nearly smooth, the medial groove feebly marked j callum 



' Bull. Mus. Comp. Zool., XII, p. 271, 1886. 



