1 1 4 COCHLOSTYLA-CORASIA. 



(the r:i ri mi Incoming 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. (Jjfr.) 



Celebes f 



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

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



H. EXTKXSA 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; 

 Hirface 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.) 



If. extensa O. FR. MULL., Hist. Verm., p. 60. DESH. in FER., 

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

 193, t. 1(50, 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 

 airj-lc with the basal margin. 



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

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



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

 know not on whose authority. 



C, CELAXIS I'ilsbry. PL 26, figs. 6, 7, 8. 



-li''ll imperforate but having a hollow axis, globose-depressed, thin, 



liu'ht, covered with a thin cuticle of a very delicate greenish-yellow 

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



