SPIRAXIS. 33 



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

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



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

 last whorl; Jamaica. 



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



34. S. PROCERUS (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 impenforate, 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 indicaft> 

 ing former growth-arrest periods. First 2 1 /*? whorls are 

 smooth; apex obtuse. Whorls 91/2, 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. PFR., Monogr. iii, p. 392; iv, 453; vd, 92. Bulimus 

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

 Bulimics subula 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 Adaims is figured 

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

 taper more rapidly and are less cylindric. There is some 



