8 HELIX CYSTICOPSIS. 



whorls 4 to 4J, convex, the last wide, globose; aperture slightly 

 oblique, rotund-lunar ; peristome acute, outer lip regularly arcuate, 

 its junction with the pillar-lip marked by a blunt angle; pillar-lip 

 sigmoid, dilated and closely appressed over the umbilical tract, thin, 

 its face concave. 



Alt. 23 diam. maj. 29, min. 27 mill. ; alt. 11, diam. 13? mill. 



Westmoreland, Jamaica. 



H. buddiana C. B. AD., Contrib. to Conch., No. 9, p. 171, (1851). 

 -PER., Monogr., iii, p. 28. REEVE, Conch. Icon., f. 296. 



Allied to the preceding in the blunt apex ; separated from it by 

 the impressed suture of the spire, fiat columella, etp. The measure- 

 ment first given above are for a large variety received from Bland 

 (fig. 83). 



H. TUMIDA Pfeiffer. PL 12, fig. 40 ; pi. 31, fig. 4. 



Imperforate, globose-conical, thin, light chestnut colored, tinged 

 with olivaceous ; lightly obliquely marked with growth lines, some- 

 times with traces of spiral lines ; spire small, conical, upper whorls 

 whitish, apex acute, not depressed, minute ; sutures well-impresssd 

 from the beginning ; whorls 5, convex, the inner gradually, the 

 last rapidly widening, rounded ; aperture slightly oblique, rotund- 

 lunar ; peristome acute, outer lip regularly arcuate ; slightly angled 

 where it joins the columella; pillar lip thin, slightly concave or 

 sigmoid, dilated around the umbilical tract. 



Alt. 23 diam. maj. 27 mill. 



Jamaica. 



A. tumida PFR., P. Z. S. 1845, p. 130. REEVE, Conch. Icon. f. 

 237. H. tunicata C. B. AD., Contrib. to Conch., No. 3, p. 33. 



This form has a more persistant cuticle than the two preceding. 

 It has a conical spire, with minute elevated apex. Large specimens 

 of H. buddiana are similar in the aperture to this species, but the 

 apical whorl is flattened. The following species is like tumida in 

 having an acute apex, but the general form of the shell is more 

 depressed. 



H. TENERRIMA C. B. Adams. PL 12, figs. 36, 37. 



Imperforate, depressed, fragile, corneous brown, obliquely marked 

 by growth-wrinkles ; spire low-conical, apex minute, acute ; suture 

 impressed from the beginning; whorls 5-5, convex, the outer wide, 

 rounded ; aperture w r ide-lunate, oblique ; outer lip acute, thin, 



