HELIX CYSTICOPSIS. 1 1 



H. COMES Poey. 



Imperforate, depressed-globose, somewhat solid, striatulate, shin- 

 ing, corneous-white, with irregularly radiating close castaneous 

 streaks ; spire convex, rather obtuse ; whorls 4, slightly convex, 

 regularly increasing, the last rounded, periphery frequently marked 

 with a pale line, not descending anteriorly ; columella sloping, cal- 

 lous ; aperture oblique, rotund-lunar ; peristome simple, acute ; colu- 

 mellar margin subreflexed, adnate. 



Alt. 9, diam. maj. 14, min. 11 J mill. (Pfeiffer). 



Isle of Pines. 



H. cubensis var.f PFEIFFER, Mai. Bl, 1854, p. 176. H. comes 

 POEY, Memorias ii, p. 29, (1857 ?). 



I do not know this species. It has not been figured. Poey says : 

 " Differt ab H. cubense mnbilico subaperto, colore constanter corneo^ 

 rufo transverse multilineato." 



H. LETRANENSIS Pfeiffer. PI. 19, figs. 38, 39. 



Imperforate; subturbinate-globose, very thin,^scarcely striatulate, 

 pellucid, slightly shining, corneous or rufo-corneous; spire conoidal, 

 rather obtuse ; whorls 4, convex, rapidly increasing, the last round- 

 ed, encircled sometimes by a pale peripheral line, not descending 

 anteriorly ; aperture slightly oblique, rotund-lunate, peristome 

 simple, acute, margins converging, the columellar arcuate, sub- 

 callous above, reflexed, and adnate at the umbilicus. 



Alt. 6, diam. maj. 10, min. 8^ mill; alt. 62, diarn. 8 mill. 



S. Juan de Letran, Jurisdiction of Trinidad, Cuba. 



H. letranensis PFR., Malak. Bl., 1857, p. 105, and Monogr. iv, p. 

 12. ARANGO, Fauna Mai. Oubana, p. 63. 



About the form of a depressed specimen of H. cubensis, but 

 smaller, and never whitish. 



H. AUBERI d'Orbigny. PL 11, figs. 10-12 ; pi. 19, figs. 40-42. 



Perforate, depressed, thin, lusterless, light corneous, obliquely 

 striatulate ; spire low-conical, apex obtuse ; sutures well impressed ; 

 whorls 42, moderately convex, the last wider, not deflected an- 

 teriorly, convex beneath, and indented around the umbilicus, m 

 front of the aperture indistinctly angulated ; aperture broad lunate, 

 oblique; peristome thin, acute, its terminations somewhat approach- 

 ing, the outer portion regularly arcuate in every part, the columella 

 short, dilated above in a triangular reflection, partly closing the 

 narrow umbilicus. 



