SPIRAXIS. 33 



cc. 5.6 x 2 mm., with 5 Whorls; about 8 or 9 grooves 

 in one mm. S. verberatus, no. 45. 



&&&. Larger, 9 to 10 mm. long; 5 to 6 striae in a mm. on 

 last whorl; Jamaica. 



8. micans, no. 43 ; 8. calus, no. 44. 



34. S. PBOCERUS (C. B. Adams). PI. 3, figs. 27, 28, 29. 



Shell small, glossy, thin, diaphanous, yellowish-brown, very 

 much lengthened. Whorls 8 to 10, not very convex ; lip thin ; 

 columella 'twisted. Divergence 18 to 14 degrees, length of 

 spire .5 inches; total length .63, diam. .14 inch. (Ad.). 



The shell is imperforate, thin but moderately strong, pale 

 yellowish-corneous, a little transparent; tapering throughout, 

 but more rapidly in the upper third of the length. The sur- 

 face is brilliantly glossy, marked with longitudinal grooves at 

 irregular intervals ; adults with a few deeper grooves indicat- 

 ing former growth-arrest periods. First 2i/o whorls are 

 smooth; apex obtuse. Whorls 9y 2 , rather weakly- convex. 

 The aperture is small, subvertical and piriform; outer lip 

 thin, a little arched forward; basal lip somewhat retracted. 

 Columella cord-like, concave below, spirally entering above. 

 Length 16.6, diam. 3.8, length of aperture 4 mm. 



Jamaica: Bogwalk (Johnson and Fox) ; Porus (Roper) ; 

 Moneague (S. L. Shumo) ; Mandeville (Henderson and Simp- 

 son) ; Bellevue; Pedro, St. Ann's (J. S. Hyde in Adams coll.). 



Bulimus procerus C. B. AD., Proc. Boston Soc. N. H. ii, 

 1845, p. 13. Spiraxis procera Ad., SHUTTLEWORTH, Dia- 

 gnosen n. moll. no. 6, p. 138. Bulimus jamaicensis REEVE, 

 Conch. Icon, v, species no. 503 (July, 1849), Achatina pi. 20, 

 f. 113. PPR., Monogr. iii, p. 392; iv, 453; vi, 92. Bulimus 

 impressus REEVE, Conch. Icon, v, pi. 68, f. 483 (May, 1849). 

 Bulimus siibula, Pfr., C. B. ADAMS, Catalogue of the Land 

 Shells which inhabit Jamaica, Contrib. to Conch, no. 9, p. 

 184 (1851). Bulimus nitidiusculus C. B. AD., Contrib. to 

 Conch, no. 2, p. 27 (Oct. 1849). PFR., Monogr. iii, p. 395. 



The typical form originally described by Adams is figured 

 (pi. 3, figs. 27, 28) and described above. Immature shells 

 taper more rapidly and are less cylindric. There is some 



