318 APPENDIX, BULIMULUS. 



with blackish dots arranged in series. Whorls 5, a little ventricose ; 

 suture somewhat impressed. Aperture elliptical, acuminate above ; 

 peristome thin. Length 1-5, diam. 0'75 inch. (G. B. Sowerby}. 



Chili: Questa Prado, under stones (Cuming) ; Questa de Arenas, 

 Huasco (Bridges). 



Bulinus punctulifer SOWB., P. Z. S., 1833, p. 36 ; Conchol. Illustr., 

 f. 36. Bulimus punctulifer REEVE, Conch. Icon., pi. 16, f. 92. 

 GAY, Hist, de Chile, viii, p. 103. PFR., Monogr., ii, p. 150; vi, 

 p. 90. Helix punctulifer GAY, Atlas of Hist, de Chile, pi. 2, f. 1. 



I have not seen this species. Sowerby's figure is copied, pi. 8, fig. 

 27. Those of Reeve, pi. 26, figs. 67-69, are said by Mr. E. R. Sykes, 

 who has examined the B. M. specimens (probably types) for me, to 

 be better for contour. The apex, according to Mr. Sykes, is invol- 

 ute and wrinkled. This indicates that the species is a Plectostylus, 

 though if so, the subperforate axis mentioned by PfeifFeris an un- 

 usual feature. When preparing my account of this group I had 

 decided to treat punctulifer as a Drymceus, confusing it with D. 

 acervatus, a somewhat similarly marked but openly uinbilicated 

 species from southern Brazil. 



Gay's figures of a specimen from the department of Huasco, look 

 rather different from those of Sowerby and Reeve. 



B. PROLATUS (Gould). PI. 2, figs. 22, 23. 



Shell an elongated, prolate spheroid, nearly as much attenuated 

 at base as at spire, surface nearly smooth and regular, of a grayish 

 or ash-color, with about four revolving bands of partially connected 

 blotches on the large whorl, and three on the smaller ones. Whorls 

 five slightly convex, and a very little rounded at the sutures. Aper- 

 ture about half the length of the shell, of an elliptic form, a little 

 angular posteriorly ; lip simple, the columella rather broadly 

 reflexed, short, white, and protecting a small umbilical perforation. 

 (Old.). Alt. 1-75, diam. 1 inch. 



Near Santiago, Chili (Couthouy). 



Bulimus prolatus GLD., Proc. Bost. Soc. N. H., ii, p. 191 (Dec., 

 1846) ; U. S. Exploring Expedition, Moll, and Shells, p. 74, pi. 6, 

 figs. 79, 79a. PFR., Monogr., ii, p. 171. 



Evidently near B. punctulifer. "A shell remarkable for its 

 regular, elongated ovoid form and its four bands of rusty-brown 

 blotches," 



