34 HELIX HEMITROCHUS. 



"T. subglobosa, fragili, lucida, laevigata, infra convexa, anfr. 4 ; 

 ornatis vel lineis longitudinalibus interrupts diversissime fasciata ; 

 labro acuto ; columella antice roseo-tincta. Long. 0.35, lat. 0.25 

 poll." 



The H. NTEVULA of Morelet is another closely allied form of which 

 I know nothing beyond the information contained in the original 

 diagnosis, which is as follows : 



T. subglobosa perforate, minute striata, pallide fulva, tennis, 

 lineolis punctiformibus creberrimo adumbrata, maculisque violaceis 

 irregularibus picta; anfr. 4|, ultimus dilatatus, aperturam rotunda- 

 turn formans; perist. simplex, acutum, margime columellari um- 

 bilicum semitegente. 



Diam. maj. 15, inin. 12 mill. (Test, noviss. i, p. 7.) 



Bcvrctcoa, Cuba. 



H. COMTA Gundlach. 



Perforate, conoid-snbglobose, thin, minutely striatulate, cretaceous, 

 ornamented with a single peripheral blackish-brown subdenticulate 

 fascia and numerous interrupted chestnut streaks ; spire conoidal, 

 obtuse ; whorls 4->, rather convex, the last rounded, briefly descend- 

 ing anteriorly ; aperture oblique, lunate-rounded ; peristome thin, 

 right margin slightly expanded, columellar margin dilated above, 

 reflexed, nearly covering the very narrow umbilicus. 



Alt. 10, diam. maj. 14, min. 12 mill. (P/r.) 



Cabo Cruz, Cuba. 



H. comta GUNDL. in PFR., Mai. Bl'dt. 1857, p. 172. PFR. Monog- 

 raphia iv, p. 266 ; v. 348. 



Known to me only by the original description translated above. 



H. FUSCOLABIATA Poey. PI. 32, figs. 61, 62. 



Narrowly perforate or subimperforate, depressed-globose, thin but 

 not fragile, opaque, whitish, tinged with brown or flesh-color, en- 

 circled by numerous or few narrow girdles of brown dots or short 

 streaks, sometimes unicolored ; surface marked by incremental lines, 

 but polished, bright and shining all over; spire low; whorls 4|, 

 slightly convex, the last depressed, rounded, deflexed anteriorly ; 

 aperture oblique, round-lunar ; peristome straight or a trifle expand- 

 ed, labiate within with deep chestnut and bordered outside with the 

 same, margins converging, basal margin narrowly expanded, col- 

 umellar margin reflexed, nearly concealing the umbilicus, dark 

 brown ; parietal wall with a very thin transparent callus. 



