358 



ten in number, convex, arcuately concentrically striated, columella 

 reflected, aperture small, lip simple ; transparent straw-colour. 



" Whorls appear more convex than in B. cjracilis" (Reeve.) 



Hob. India : Moradabad. 



318. Opeas prestoni, Sylces. 



Opeas prestoni, Sykes, Proc. Malac. Soc. London, iii, 1898, p. 73 



pi. 5, fig. 4. 

 Opeas mauritianum, var. prestoni, Pilsbrv, Man. Conch, ser. 2, 



xviii, 1906, p. 134, pi. 17, figs. 98-100. * 



Original description : " T. subperforata, elongato-cylindrica, 

 translucida, tenuis, cornea vel cereo-cornea, apice obtusiusculo ; 

 anfr. 8^, plano-convexi, longitudinaliter lineis incrementibus 

 striati, ultimus -$$ longitudinis subsequans, sutura bene impressa, 

 apertura elongato-ovata ; peristoma simplex, acutum, margine 

 columellari ad basim breviter reflexo, perforationem fere tegente. 



" Alt. 11, diam. 3-25 mm. , alt. ap. 3, lat. ap. 1-8 mm." (Sylces.) 



Hab. Ceylon: Uda Pussellawa (Preston). 



"The apex is much more obtuse and the earlier whorls are 

 broader than 0. gracilis, and the shell generally is more cylindrical 

 and not so needle-shaped ; it appears to be variable in colour. 

 [ have given the dimensions of an average specimen ; one found 

 by Mr. Preston measures alt. 14, diarn. 4 mm." (Sykes.) 



319. Opeas innocens, Preston. 



Opens innocens, Preston, Rec. Indian Mus. v, 1910, p. 33, fig. 2. 



Original description : " Shell bluntly subulate, whitish, thin ; 

 whorls 8, flat, rather sharply shouldered above and below, trans- 

 versely striate with lines of growth ; sutures deeply impressed ; 

 columella descending in a slight curve, extending above into a 

 thick, parietal callus which joins the margin of the lip above ; 

 labrum acute, simple, aperture elongately ovate. 



"Altitude 5-5, diam. major 1-25, apert. alt. '75, diam. -25 mm." 

 (Preston.) 



Hab. Burma : Khayon Cave, near Moulmain (Annandale). 



Appears to be closely related to, if not identical with, 0. gracile. 



320. Opeas latebricola, Reeve. 



JBulimus latebricola (Benson), Reeve, Conch. Icon, v, 1849, Buli- 



mus, pi. 80, fig. 572 ; Pfeiffer, Mon. Helic. Viv. iii, 1853, p. 401 ; 



ibid., Conch. -Cab., Butimus, 1853, p. 74, pi. 20, figs. 5,6; Hanlev 



& Theobald, Conch. Jnd. 1874, pi. 79, fig. 7. 



Bulimus (Opeas) latebricola. Pfeiffer, Malak. Blatt. ii, 1856, p. 156. 

 Stenogyra (?) latebricola, Nevill, Hand List, i, 1878, p. 174. 

 Bulimina (Hapalus} latebricola, Pfeifter tfc Clessin, Nomencl. Helic 



Viv. 1881, p. 299. 

 Opeas latebricola, Pilsbry, Man. Conch, ser. 2, xviii, 1906. p. 162, 



pi. 19, figs. 20, 23. 



