SPIRAXIS. 37 



Reeve's figure (fig. 45) seems to 'be poor, and is too small to 

 show the characters clearly. Pfeiffer figured another and 

 smaller shell from his own collection, (fig. 49), which shows 

 the typical shape and columella of l&viusculus. C. B. Adams' 

 lot of aberrans in the Amherst collection are chiefly large 

 l&viusculus, but he had also S. perstriatus and an Opeas 

 goodalli in the lot, most of the shells being in poor condi- 

 tion, dirty and more or less broken. He subsequently pro- 

 posed to call what he took for aberrans, var. unicolor-, but 

 the absence of colored streaks seems to be due solely to the 

 faded condition of his specimens. 



37. S. PAUPEBCULUS (C. B. Adams). PI. 4, figs. 46, 50, 51. 



"Shell much elongated, regularly tapering to the summit; 

 white, with a thin horn colored epidermis; with noimeroua 

 broad lightly impressed arcuate transverse striae; spire with 

 rectilinear outlines ; apex rather obtuse ; whorls seven, rather 

 convex, with a well impressed suture; aperture long ovate, 

 quite acute above; labrum thin and sharp; columella well 

 thickened. Mean divergence 18 ; length .25 inch ; breadth 

 .25 inch; length of aperture .075 inch." (Adams). 



Shell slenderly oblong-turrite, thin, pellucid, yellowish 

 corneous, polished, with sculpture of irregularly spaced 

 longitudinal grooves. These grooves are widely spaced on 

 the last whorl (where there are about 10 or 11), but on the 

 penult and next earlier whorls they are much closer by the 

 interpolation of shorter grooves not reaching to the suture 

 below. The first two whorls are smooth. Spire straight- 

 sided, slender, the summit obtuse. First whorl enlarges 

 rapidly ; subsequent whorls slightly convex. Aperture small, 

 narrow, almost lanceolate, sub vertical, .but receding below. 

 Outer lip arching forward in the middle, in profile view. 

 Columella cord-like, concave below, ascending in a convex 

 spiral curve above. Parietal film indistinct. Length 5.2, 

 diam. 1.6, length of aperture 1.75 mm. 



Jamaica (C. B. Adams) : Long Mt. and Montego Bay 

 (Henderson and Simpson). 



Bulimus pauperculus C. B. AD., Contrib. no. 2, p. 27 



