81MPULOPS1S PLATYSUCCINEA. ZZH 



C<tgu<ina, near Utnado, Porto Rico, on leaves of Gujave trees, 

 PsMium piriferum and pomiferum (Gundlach & Krug). 



Bidimus (Eudioptus) psidii MARTENS, Jahrb. d. D. Malak. Ge- 

 sell.. iv, 1877, p. 351, pi. 12, f. 6. 



* 1 am not at all certain that the specimens before me are com- 

 pletely mature, but neither do I know of any Portorican species 

 which they could be considered the young of. There are several 

 specimens of the same size, and both Gundlach and Krug assert that 

 they are not the young of any other species" {Martens}. 



The far smaller size, with the same number of whorls as S. porto- 

 ricetisisi indicates that this is not the young of that form. Though 

 not hitherto referred to Simpulopsis, it is evidently congeneric with 

 portoricensis. 



S. DOMINICENSIS Pfeiffer. PI. 63, fig. 75. 



Shell globose, with short, conic spire and large, oblique body- 

 \\liorl, smooth except for some slight growth-wrinkles, and faint 

 transverse impressions on the last whorl, glossy, pale yellow, very 

 thin, and when not adult extremely fragile. Whorls 3^, convex, 

 separated by deeply impressed sutures, the last whorl rotund. Aper- 

 ture quite oblique, rotund, slightly excised by the penultimate 

 whorl; columella arcuate above, sloping below, thin. Alt. 6.4, diam. 

 7 mill. 



Haiti: Sans-souci (Rolle) Santo Domingo, Mt. Dieyo Campos on 

 leaves of palms (Hjalmarson); San Cristobal (Salle); Santa Domingo 

 without exact locality (Gabb). 



S. dominicensis PFR., Malak. Bl., 1858, p. 146; Monogr. iv, p. 

 802; v, p. 23 CROSSE, Journ. de Conchyl., 1891, p. 127. 

 Vitrina ?, HJALM ARSON, Malak. Bl., v, 1858, p. 146. 



The specimen figured was collected by Gabb. The young are 

 very fragile and pellucid, with the texture of Vitrina. The altitude 

 " 3 mill.!' assigned by Pfeiffer must be a mistake, possibly from mis- 

 reading the scale. 



8. ^NEA Pfeiffer. PI. 63, figs. 58, 59, 60. 



Shell conic-globose, thin, very closely striated, pellucid, with 



bronze reflections, olivaceous-corneous. Spire' short, slightly conic, 



the apex rather obtuse, roseate; suture impressed. Whorls 2J, at 



first convex, the last inflated. Aperture oblique, oval, glossy and 



15 



