SIMPULOt'SIS. 219 



Caribbean Species. 

 S. VINCENTINA E. A. Smith. PI. 63, figs. 65, 66. 



Shell orate, very thin, pale greenish-corneous, spire obtusely 

 conoid ; whorls 3, the first two sculptured with delicate, close, waved 

 stria?, the first whorl involute at the apex; last whorl ample, deli- 

 cately plicate longitudinally, and transversely obsoletely substriate, 

 scarcely descending. Aperture inversely auriform ; peristome very 

 thin throughout. Length 13, diam. 10 mill. (Smith.) 



St. Vincent, Upper Richmond Valley, in damp forest, 2000 feet 

 elevation, on leaves of A rtanthe (Piperacetz). H. H. Smith. 



S. vincentina SM., Proc. Malac. Soc. i, p. 305, pi. 21, f. 4, 5 (Oct., 

 1895). 



Only a single specimen was collected. The ovate form, rather 

 conical spire, and the peculiar fine sculpture of the two upper whorls, 

 distinguish this form from other species of the genus. (Smith.) 



I suppose Mr. Smith refers to spiral stria? on the first two whorls; 

 if longitudinal stria? are meant, the species would be referable to 

 Amphibulima, not Simpulopsis. 



Species of Mexico and Central America. 



S. SIMULA (Morelet). PI. 63, figs. 56, 57. 



Shell conic-globose, very thin, somewhat membranaceous, pellucid, 

 elegantly sculptured with slightly oblique longitudinal and rather 

 spaced folds ; pale olivaceous-corneous. Spire shortly conoid, the 

 apex rather obtuse ; suture impressed. Whorls 4^, a little convex, 

 the earlier two nearly smooth, the last larger than the spire, ex- 

 panded and inflated. Aperture lunate-rotund, colored within like 

 the outside ; peristome simple, concolor, the terminations separated, 

 columellar margin arcuate, thin, basnl and outer margins acute. 

 Length 11, diam. 9, length of aperture 7, width 6 mill. (F. $ C.). 



Peten, northern Guatemala, in woods, on the leaves of trees (More- 

 let). 



Bulimus simulus MORELET, Testacea Novissima ii, p. 11 (1851). 

 PFR., Monogr. iii, p. 383 (1853); iv, p. 450; vi, p. 90. 0rthah'cus 

 (Plectostylus) simulus' Aus., Genera ii, p. 155 (1858). Bulimulus 

 (Eudioptus) simulus ALBERS, Die He!., edit. v. Mart., p. 223 

 Simpulopsis f simula PFR., Monogr. vii, p. 516 (1876). Simpulopsis 



