ANTILLEAN LEPTINABIA. 297 



strong, corneous-white or brown-tinted. Surface shining, 

 densely and finely sculptured with slightly arcuate striae. 

 Spire long, regularly tapering, the summit obtuse, smooth. 

 Whorls 9, quite convex, the last two a little flattened in the 

 middle, very convex below the suture. Suture deeply im- 

 pressed. Aperture small, ovate, the outer lip arched forward 

 a little above. Columella short, concave, strongly truncate 

 below. 



Length 10.5, diam. 3, aperture 2.8 mm., whorls 9. 



Length 8.5, diam. 2.5, aperture 2.3 mm., whorls Sy 2 . 



Jamaica (C. B. Adams) ; Swift river (W. J. Fox) ; west 

 of Port Antonio, Mandeville and Bogwalk (Henderson and 

 Simpson). Varieties in Haiti and Cuba. 



Achatina striosa C. B. AD., Contrib. to Conch., no. 2, p. 26 

 (Oct., 1849) ; no. 9, p. 167. PFR., Monogr., iii, p. 502. 

 Lamellaxis striosus C. B. Ad., STREBEL, Beitrag Mex. Land- 

 und Susswasser-iConch., v, p. 114, pi. 12, f. 13. 



The description is from Adams' type lot at Amherst; figs. 

 52, 53 from shells compared with the types. Prof. Adams 

 gives the length of his original specimens as 7, diam. 2.12 

 mm., whorls 8. It is a common and widely distributed species, 

 with much the aspect of Subulina. Spherical white eggs may 

 be seen in some individuals. 



In some places it is much smaller; in a series of 19 from 

 west of Port Antonio the largest are about 6 mm. long, with 

 7y 2 whorls (fig. 54). At Bogwalk and Mandeville they are 

 equally small. 



I am inclined to refer these examples to L. abdita Poey, 

 which is very similar. 



In Haiti L. striosa occurs in the north at Cape Haitian 

 and environs, Charmette, Sans Souci (pi. 44, figs. 55, 61, 63) 

 and La Ferriere, inland towards Dondon; at Thomaseau, St. 

 Mark and Port au Prince (pi. 44, fig. 59) in the Cul-de-sac. 

 The shells from the latter place closely resemble the small 

 form of Jamaica and the Cuban abdita. Those from other 

 Haitian localities are practically identical with typical Jamai- 

 can striosa to the eye, but if there is a difference it is that 

 Haitian striosa have the spire a trifle more slender. 



