370 DESCEIPTIONS OF NEW SPECIES OF FOSSILS 



YOLYTJLA, A. Ad. 



V. ACUTA, d'Orb. sp. 



Bulla id., d'Orb., La Sagra, PI. 4 {not 4 bis), figs. 17-20. 



I found an allied species to this in Santo Domingo, which I called cylindrica. 



The present is the first time that acuta is reported fossil. 



BULLA, Linn. 



B. STRIATA, Brug., Enc. Meth., p. .372. 



Not rare, but the specimens are always small; the largest being less than an 



inch in length. 



OPERCULATUM, Linn. 



O. TNDiCTJM, Linn., Gmel. (sp.), p. 3720. 



Not rare; but difficult to preserve from being extremely fragile. 



MARTESIA, Leach. 



M. STRIATA, Linn, sp., Syst. Nat., p. IIIL 



But a single specimen, in good condition however, with the valves together, 



and perfectly recognizable. 



TAGELUS, Gray. 



(Siliquaria Schum., not Brug.') 



T. LINEATUS, n. s., PI. 47, fig. 71. 



Shell thin, elongate subquadrate, ends rounded, base nearly straight or very 

 slightly concave; beaks placed about a third of the length from the anterior end. 

 Surface posterior to the beaks crossed by a series of fine lines, imbricated, and 

 irregular, but subparallel. These lines begin at the cardinal margin, inclined 

 strongly forward and change their direction on the convex surface, which extends 

 from the beaks to the posterior basal angle, becoming more transverse but not 

 reaching the basal edge. They do not occur in advance of the beaks, and on 

 some specimens cover but a part of the area above indicated. 



T. lineatus is nearest to T. gibba, Spengler, but differs in the posterior end 

 being more regularly convex, in the beaks being more anterior, in the whole shell 

 being shorter and broader, and in the surface markings. In this latter character 

 it is very much like Macha Candida, Rinieri, but the lines do not extend so far 

 forward as in that species. 



CORBULA, Brug. 



C. CONTRACTA, Say, Journ. Phil. Acad., 1 ser., v. 2, p. 312. 



Fossil in Costa Rica, and common, living on the coast of the United States. 

 Found also in the Dominican Miocene. 



