BULIMULUS-ANTILLEAN. 47 



B. DIAPHANUS (Pfeiffer). PL 9, fig. 44. 



Shell narrowly perforate, thin and fragile, narrowly oblong-conic, 

 alt. more than double the diam. ; corneous-brown (usually coated 

 with closely adhering red earth), lusterless, the surface faintly stri- 

 atulate, and spirally encircled with numerous delicate unequal epi- 

 dermal lirce. Spire elevated, the apex obtuse, nepionic whorls densely 

 and minutely pit-reticulated ; whorls 6-62, slightly convex. 



Aperture ovate, about three-sevenths the total alt., corneous-brown 

 inside; outer lip thin, unexpanded and fragile; columella slightly 

 concave, the columellar lip convexly dilated and reflexed above. 



Alt. 16, diam. 7'2 mill. 



Alt. 15, diam. 7 mill. 



St. Thomas (Bland) ; Arecibo, Porto Rico (Bid.) ; St. Eustatius ' 

 (Dr. Cleve) ; Saba (Ober, 1880) ; Barbados (Miss Foderougher, in 

 Swift Coll.). 



Bulimus diaphanus PFR., P. Z. S., 1854, p. 125 ; Monogr., iv., p. 

 505. 



Quite fragile and slender, but less elongated than B. mazei Crosse. 

 The apical sculpture is very fine. The Saba, St. Eustatius and Bar- 

 bados specimens agree in every respect with those from St. Thomas. 

 Specimens from Porto Rico, which I can only refer to this species, 

 vary from typical to decidedly wider ; selected examples measuring 

 as follows : 



Alt. 14*8, diam. 7'3 ; alt. of aperture 6'2 mill. 



Alt. 13'3, diam. 7*5; alt. of aperture 6'7 mill, (immature). 



B. MARTINICENSIS (Pfeiffer). PL 9, figs. 47, 48, 49. 



Shell rimate-perforate, oblong-turrited, obliquely striatulate, rather 

 solid, yellowish-corneous. Spire turrited, a little obtuse ; whorls 7, 

 convex, the last slightly over one-third the length of shell. Aper- 

 ture ovate-oblong, peristome narrowly expanded, white-lipped within, 

 the lip outwardly pellucid, margins somewhat converging, the right 

 margin arcuate, columellar margin dilated. Alt. 20, diam. 8 mill. ; 

 aperture 71 mill, long ; 5 wide (P/V.). 



Martinique, at Massif des Pitons, alt. about 560 meters, in very 

 shady places under leaves (Maze). 



Bulimus martinicensis PFR., P. Z. S., 1846, p. 40 ; Monogr., ii, p. 

 120; Conchyl. Cab., p. 238, pi. 63, f. 9, 10. REEVE, Conch, Icon., 

 pi. 63, f. 434. Bulimulus martinicensis MAZE, Journ. de Conch., 

 1874, p. 164. 



