258 HELIX-CHLORITIS. 



Var. HOMBRONI Pfr. PI. 37, tigs. 45, 46, 47. 



Shell more depressed, the aperture of a narrowly crescentic form ; 

 color chestnut-brown like the type, of a chocolate shade, dark spec- 

 imens having the inner whorls lighter, and the reflexed lip white, 

 both on its face and back. 



Alt. 19, greater diam. 31, lesser 26? mill. 



Alt. 20, greater diam. 36, lesser 31 mill. 



Alt. 18, greater diam. 27, lesser 24 mill. 



Specimens both larger and smaller than the one figured are before 

 me. Fig. 47 is incorrect in showing no umbilicus. 



Group of H. tuba. 



Spire flat or convex ; having a few wide dark bands on a lighter 

 or white ground. Distribution, Celebes. 



H. BULBULUS Mousson. PI. 44, figs. 1, 2, 3,, 16, 17. 



Shell rather broadly umbilieated, inflated-discoidal, lightly stria- 

 tulate, roughened by minute close hairs, and minutely quasi reti- 

 culated. White, three-banded with brown, the umbilicus brown ; 

 spire subimmersed ; suture rather deep ; whorls 4fc, the last inflated, 

 convex beneath, deeply descending in front. Aperture diagonal, 

 lunate-semi-elliptical ; peristome broadly expanded all around, thin, 

 of the same color as the shell, margins conniving. 



Alt. 19i-16 J, greater diam. 42-33, lesser 31-25 mill. (Mart.) 

 Southern Celebes, at the waterfall at Maros. 



H. bulbus Mouss., Moll. Jav., p. 114, t. 21, f. 5 (young). MAR- 

 TENS, Mai. Bl. x, 1863, p. 76. H. bulbulus (Mouss., ms.,) PFR. 

 Monogr. iii, p. 271. MARTENS, Ostas., Landschn., p. 285, 1. 17, f. 2 ; 

 t. 19, f. 4 (animal). DOHRN, Conchyl. Cab., p. 574, t. 169, f. 7-9. 



Distinguished from H. tuba by the wider umbilicus, wider and 

 more arcuate basal lip, and completely flat spire. 



H. TUBA Albers. PI. 46, figs. 54, 55, 56 ; pi. 55, fig. 55. 



Shell very narrowly umbilicate, depressed, thin, subgranulate and 

 beset with short, rigid hairs arranged in quincunx ; opaque, tawny, 

 banded with brown, the umbilical region brown, encircled with 

 white ; spire little projecting ; whorls 4, slightly convex, the last 

 inflated, a trifle descending in front ; aperture nearly vertical, trans- 

 versely oblong ; peristome reflexed all around, pale corneous, the 



