234 HELIX-OBBA. 



H. COLUMBARIA Sowerby. PI. .54, figs. 14, 15, 16, 17. 



Shell umbilicated, depressed, low-conic above, the periphery not 

 carinated ; of an olive-yellow tint, having one, two or three chest- 

 nut bands, variegated with opaque buff flecks or zigzag lines ; a row 

 of light blotches always below the suture; basal lip prominently 

 toothed in the middle. 



The shell is solid, delicately obliquely striated ; there is almost 

 always a brown peripheral band present, usually a broader basal 

 band, and a fainter one at the suture, interrupted by regularly 

 placed opaque buff blotches. Apex obtuse, corneous, first twa 

 whorls polished. Last whorl not angled or keeled at periphery, 

 abruptly deflexed in front. There is a constriction just behind the 

 reflexed upper lip, and then a prominent crest or gibbous ridge. 

 Aperture white within, very oblique, ovate-wedge-shaped ; peristome 

 white or delicate flesh-tinted, thickened, reflexed ; basal lip toothed 

 in the middle. Umbilicus narrow, deep. 



Alt. 18, greater diam. 30, lesser 25* mill. 



Province of Albay, Id. of Luzon, Philippines. 



H. columbaria SOWB., P. Z. S. 1841, p. 19. PFR., Monogr. i, p. 

 381 ; Conchyl. Cab. p. 61, t. 77, f. 1-3. REEVE, f. 54. HIDALGO, 

 Journ. de Conchyl. 1887, p. 100. Obbina columbaria SEMPER, Phil. 

 Archip., ii, p. 126. 



May be known from other species having a crest or gibbous ridge 

 behind the upper lip, by its elevated spire, rounded periphery, and 

 row of buff blotches around the sutures. 



Section NEOCEPOLIS Pilsbry, 1890. 



Shell globose or globose-depressed, with no tendency toward car- 

 ination. Umbilicus narrow or closed. Columella widened, gen- 

 erally more or less toothed ; surface striate, granulated or decussated, 

 not malleated or rudely wrinkled ; lip reflexed all around, its ter- 

 minations remote from one another, scarcely converging. Last 

 whorl only moderately or not at all descending in front ; typically 

 having a callus tooth within as in the section Cepolis. Anatomy 

 unknown. Type Helix merarcha Mabille. 



Distribution, Southeastern Asia (Tonquin, etc.), Andaman Islands, 

 Nicobar Is., Philippines. 



The section here constituted is much more comprehensive than 

 Albers' Janira. The latter name is several times preoccupied in. 

 Zoology. 



