112 HELIX-EUHADRA. 



descending in front; aperture oblique, lunar, whitish inside ; per- 

 istome white, a little expanded, the margins remote, columellar mar- 

 gin reflexed above into a plate which half covers the very narrow 

 umbilicus. (-P/V.) Alt. 12j, greater diam. 18, lesser 16 mill. 



Island of Batan, Basliee group. 



H. batanica AD. & RVE. Yoy. Samarang, Moll., p. 60, t. 15, f. 5. 

 -RvE., Couch. Icon., f. 588. PFR. Monog. Hel. Viv. iii, p. 218 ; 

 Couchyl. Cab., p. 384, t. 142, f. 5, 6. 



H. FORMOSEXSIS Pfeiffer. PL 13, % 56 ; pi. 29, fig. 10. 



Shell sinistral, umbilicate, subturbinate-depressed, rather thin, 

 obliquely finely striate, waxen white under a very thin epidermis ; 

 spire short turbinate, apex obtuse ; whorls 5*, regularly increasing, 

 slightly convex, the last obsoletely uuifasciate and subangulated at 

 the periphery, slightly descending in front, convex beneath, sculpt- 

 ured with very minute spiral stria?, not compressed around the mod- 

 erate, profound umbilicus ; aperture oblique, broad lunar ; peris- 

 tome somewhat thickened, margins remote, the upper one sinuous, a 

 little expanded, basal margin reflexed, dilated at the insertion. 

 (P/r.) Alt. 12-13, greater diam. 26, lesser 22* mill. 



Formosa. 



H. formosensis PER. P. Z. S. 1865, p. 829, t. 46, f. 7; Mai. Bl. 

 1866, p. 41 ; Monogr. v, p. 340. 



H. BOCAGEANA Crosse. PL 32, figs. 40, 41. 



Shell narrowly umbilicated, depressed-globose, longitudinally 

 rugose-striate, with very obsolete decussating spiral stria?, pellucid, 

 dull yellowish, with a single chestnut band ; apex rather obtuse ; 

 whorls 6, a little convex, the last scarcely descending in front, 

 moderately subdepressed around the umbilicus ; aperture trans- 

 versely dilated, lunar; peristome pale brownish-violet, columellar 

 margin dilated above partly closing the umbilicus, outer margin 

 subattenuated ; throat white, showing the brown band. (Crse.) 



Alt, 19, greater diam. 25, lesser 22 mill. 



China f 



H. bocageana CRSE. Journ. de Conchyl. 1864, p. 284 ; 1866, p. 

 58, t. 1, f. 4. PFR. Monogr. v, p. 342. 



H. BACCA Pfeiffer. PL 32, fig. 49 ; pi. 26, fig. 8. 



Shell umbilicate, depressed-globose, solid, very lightly striate, 

 whitish-buff, ornamented with three chestnut bands, the peripheral 



