34 HELIX HEMITROCHUS. 



"T. subglobpsa, fragili, lucida, Isevigata, infra convexa, anfr. 4 ; 

 ornatis vel lineis longitudinalibus interruptis diversissime fasciata; 

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

 poll." 



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

 I know nothing beyond the information contained in the original 

 diagnosis, which is as follows: 



m 



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

 lineolis punctiformibus creberrimo adumbrata, maculisque violaceis 

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

 turn forman*; perist. simplex, acutum, margime columellari um- 

 bilicum semitegente. 



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



Baracoa, Cuba. 



H. COMTA Gimdlach. 



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, miu. 12 mill. (P/V.) 



Cabo Cruz, Cuba. 



H. comta GUNDL. in PFR., Mai. Blat. 1857, p. 172. PFR. Monog- 

 rnj>/n'<t, iv, p. 266; v. 348. 



Known to me only by the original description translated above. 



II. rrscoLABiATA 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, 

 hut 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, /ti/ii<it('. irifliiti ivith deep chestnut and bordered outside ivith the 

 sai< , margins converging, basal margin narrowly expanded, col- 

 umellar margin reflexed, nearly concealing the umbilicus, dark 

 brown ; parietal wall with a very thin transparent callus. 



