114 COCHLOSTYLA-CORASIA. 



(the carina becoming more obtuse) ; covered with a thin, tawny 

 cuticle, irregularly streaked and four-banded with brown ; base more 

 convex ; columella little oblique, compressed, subexcavated ; aper- 

 ture oblique, wide lunar, the right side obsoletely angulated, inside 

 bluish-pearly, shining ; peristome simple, narrowly reflexed, upper 

 margin curving forward, basal margin forming an obtuse angle with 

 the columella. 



Alt. 21-22, greater diam. 42, lesser 34 mill. (Pfr.) 



Celebes f 



H. leucophthalma PFR., Mai. Bl. xvii, 1870, p. 93 ; Novit. Conch. 

 iv, p. 10, t. Ill, f. 8, 9 ; Monogr. vii, p. 335. 



H. EXTENSA Miiller. PL 27, figs. 9, 10, 11. 



Shell imperforate, globose-depressed, rounded at the periphery, 

 thin but rather solid ; white under a fugacious yellowish epidermis ; 

 surface shining, very lightly striatulate, having faint, almost obsolete 

 spiral stride, seen only under a strong lens. Spire low, apex obtuse ; 

 whorls 4, the last globose, a little descending in front. Aperture 

 large, oblique ; peristome narrowly expanded and subreflexed 

 throughout; the columella steeply sloping, straight, somewhat 

 thickened, forming a decided and conspicuous angle at its junction 

 with the basal margin. 



Alt. 21, greater diam. 27?, lesser 22? mill. 



Alt. 19, greater diam. 26, lesser 21 mill. 



Island of Goram. (Wallace.) 



H. extensa O. FR. MULL., Hist. Verm., p. 60. DESK, in FER., 

 Hist., t. 96, f. 5-7. PFR., Monogr. iii, p. 193; Conchyl. Cab., p. 

 193, t. 160, f. 6, 7. MARTENS, Ostas. Zool., Landschn., p. 331. 



A larger shell than H. najas, more flattened above, and with the 

 columella more thickened, straighter and longer, forming a decided 

 angle with the basal margin. 



The axis is perforated in young shells, although from the appear- 

 ance of adults one would not suspect this to be the case. 



Part of the specimens before me are marked " New Ireland," I 

 know not on whose authority. 



C. CCELAXIS Pilsbry. PI. 26, figs. 6, 7, 8. 



Shell imperforate but having a hollow axis, globose-depressed, thin, 

 light, covered with a thin cuticle of a very delicate greenish-yellow 

 tint, becoming white on the spire; the suture bordered below by a 



