i08 CYCLOPIIOKTDJ;. 



Var. applanata, G. Nevill. 



JPterocyclus ncmns, var. ap])lanata,G. Nevill, J. A.S.B. 1, 1881, p. 146; 

 Kobelt, Das Tierreicli, Lief. 16, 190i', p. 167. 



Differs from the type in being rather more richly painted, with 

 more flattened spire, more slowly increasing whorls, and slightly 

 more open umbilicus. 



Diam. 13"75, alt. 7 mm. 



Hab. India: Southern India (*S'ioZiC-A.'a) ; '? Salam (Nevill). 



Var. reflexilabris, G. Nevill. 



Pterocyclus Planus, var. reflexilabris (? distinct species), G. Nevill, 

 J. A.S. B. 1, 1881, p. 146; Kobelt, Das Tierreich, Lief. 16, 1902, 

 p. 167. 



Pterocyclus nanus reflexilabris, Kobelt, Conch.-Cab., Cvclopboridae, 

 ii, 1910, p. 754. 



"A white apparently colourless form, with black apex and 

 easily distinguished from the preceding [_nanus\, as well as Pter. 

 CI/ clojyJi avoid eiis, by the fragile, broadly reflected and duplex peris- 

 tome, rather differently shaped too aliove ; the operculum, in my 

 single specimen, agrees with what I take to be the typical form ; 

 it is very little raised or concave .... Mr. Blaiiford also 

 possesses two specimens." (Nevill.) 



Hab. India: Khoondah Hills (P/rte) ; W\\^\viY{\\\s (Blanfonl). 



154. Pterocyclus parvus, Pearson. 



Spij'aculuni parvian, I'e'dvson, J, A.S.B. ii, 1833, p. 592, pi. 20, 

 fig. 7. 



Pterocyclos jmrvus, Benson, J. A. S. B. v, 1836, p, 357 ; id., A. M. N. H. 

 ser. 2, i, 1848, p. 346; Pfeiffer, Zeits. Malak. viii, 1851, pp. 5, 

 136; id., Mou. Pneum. 1852, p. 48; id.. Cat. Pbaneropn. lirit. 

 Mas. 1852, p. 30 ; id., Coucb.-Cab., Cyclostomaceen, 1853, p. 233, 

 pi. 31, figs. 12-14 ; Adams, Gen. Kec. Moll, ii, 1855, p. 277 ; 

 Reeve, Concb. Icon, xiv, 1863, Pterocyclos, pi. 3, fig. 15 ; Hanley 

 & Theobald, Concb. Ind. 1876, pi. 142, figs. 7, JO; Godwin- 

 Austen, J. A.S. B. xlv, part 2, 1876, p. 174; Theobald, Cat. 

 Shells Brit. Ind. 1876, p. 38; Tapparone-Canefri, Ann. Mus. 

 Civ. Genova, ser. 2, vii, 1889, p. 309. 



Pterocyclus /)«/-z;;<s, Nevill, Hand List, i, 1878, p. 260; Kobelt & 

 MiJlleiidorlf, Nacbr. Deuts. Malak. Ges. xxix, 1897, p. 114 ; id.. 

 Cat. Pneum. 1899, p. 26 ; Kobelt, Das Tierreich, Lief. 16, 1902, 

 p. 167 ; id., Concb.-Cab., Cyclopbori(iae, ii, 1909, p. 730. 



Original description: — "Shell white, subdiaphauous, zoned with 

 a dark brown line along the circumference of the whorl, striated 

 above with brown zig-zag striae, and less distinctly so below. 

 Shelly spiracle or breath nig tube situated near to the mouth. 

 Mouth perfectly circular ; lip thickened and reflected, umbilicus 

 largely dilated, upper surface plaiio-convex, almost flat. Diameter 

 3"% of an inch. [I4x ll"5x5 mm.] 



