OF SANTO DOMINGO. 



much longer canal. At the same time it differs in being more grooved near the 

 sutm-e, making a distinct shoulder whorl. It is not impossible that all of these forms, 

 together with F. rTiomboidea, Rogers, of the I^orth Carolina Miocene, should all be in- 

 cluded under the Linna^an name of tulipa. 



F. intermedia. Sby. Quart. Jour. 1849, j). 49. 



Yery close to the young stage of F. gigantea, which it resemljles much more 

 closely than F. imjnllosa. The papillary apex is simply the single nuclear whorl, 

 which is rather larger than usual. 



LATIRUS. Montf. 



L. infundibulum. Gmel. Lam. A. S. V. (Desli. Ed.) Yol. IX, p. 380. ' ' 



Id. Rve. Icon. Sp. 3. 



M Guppy. Quart Jour. Vol. XXII, p. 288. . . " 



L. el on gat us. Qabb, n. s. 



Shell very elongate, slender-fusiform, sjiire high, many whorlcd ; whorls rounded in the sides ; suture distinct. 

 Surface marked by a series of broad, rounded, longitudinal ribs, about nine to a volution, crossed by simple revolving 

 lines, larger on the canal than on the body of the last whorl ; canal very long, straight ; inner lip with four or five 

 small, slightly oblique folds. Length about three inches. 



Easily distinguishable by its very elongate fusiform shape, and its long, slender 

 straight canal. - .i : 



L. e X i 1 i s. Gabb, n. s. 



Small, elongate, slender, spire longer than the aperture and canal ; whorls numerous, suture bordered by a rib ; 

 sui'face marked by a very few large longitudinal ribs, five or six to a volution. These are crossed by strong revolving 

 lines, of which about three appear on the upper whorls. Mouth small, oval, extended into a long slender, slightly 

 curved canal ; inner lip encrusted, the plate extending so as to make a raised sharp border to the mouth ; internally 

 marked by two strong transverse folds. Length 1.5 inch. 



Differs from the preceding by its coarse sculpture, the laterally-bent canal and the 

 details of the mouth. 



L. fusiform is. Gabb, n. s. 



Shell small, fusiform, spire a very little shorter than the mouth; whorls nine, subangulated and slightly con- 

 cave above ; surface marked by about eight or nine longitudinal ribs crossed by revolving lines. Aperture broad ; 

 inner lip with three oblique folds ; canal long, straight. Length 1.7 inches. 



In sculpture, this is nearest to L. infundibulum, but it differs in being more finely 

 sculptured, and being more regularly fusiform, with a long straight canal, and in not 

 being umbilicated. From L. elongatus it difl'ers in being more broadly fusiform, shorter 

 and broader, in being sub-angulated above, and in the columellar plications. 



L. a n g u s t a t u s. Gabb, n. s. 



Shell elongate, slender-fusiform ; spire many wliorled, longer than the aperture ; whorls convex, suture well 

 marked. Surface marked by a dozen long rounded ribs with regularly concave interspaces antl crossed by small re- 

 volving lines. Aperture elongate ; inner lip with two or three small obli<ine ribs ; canal moderately elongatctl, 

 slightly twisted. Length 1.4 inches. 



A. P. s. — VOL. XV. 3e. 



