i40 CtCLOtHORiDjfi. 



operculum. C. filocinctam has tlie inner lip of the peristome 

 furnished with large, prominent, ohtuse, white crenations ; and 

 the spiral ribs or costulations on the base of tlie lowest wliorl are 

 always continuous up to the umbilical region, there being no in- 

 tervening smooth space. C. ivynadense has the inner lip of the 

 peristome smooth ; and the spii'al costulations on the lower whorl 

 are generally interrupted by a smooth space before the umbilical 

 region is entered; but this latter character is not constant, as 

 some of my specimens have the costulations continuous up to the 

 umbilical region, as injilocinctum, so that it cannot, in the absence 

 of the operculum, be looked to as a characteristic to distinguish 

 them ; but the jieristome, where tlie sliell is adult, is a safe 

 character." [Beddoine.) 



195. Cyathopoma peilei, Preston. 



CytifJtopoma peilei, Preston, I'roc. Malac. Soc. v, 1903, p. 340, 

 texl-lig. I. 



Oririinal description: — "Shell dextral, trochiform, umbilicated. 

 Whorls 5, spirally grooved and cross-sculptured with distinct 

 lirse. Periostruciuu smooth, of a deep rich brown colour. Suture 

 cha.nnelled. Peristome double and reflexed. Umbilicus deep. 

 Aperture ahnost circular. Alt. 3, diam. max. 3 mm." 



Hah. India: Yercand, Shevroy Hills (/Vi/c). 



"The nearest ally to this species seems to be Cyathopoma 

 ivj/noadcnse, Ehuiford, from which it differs in having coarser 

 but fewer spiral lines of sculpture, cross plications, a slightly 

 more narrow umbilicus, and a channelled suture ; moreover, it 

 is more trochiform in sha])e and of a much darker colour,"' 

 (Freston.) 



19G. Cyathopoma prestoni, SyJces. 



Cyathopoma jirestoni, Svkes, Proc. Malac. Soc, ii, 1897, p. 230, 



pi. 16, figs. 17, 18. 

 Cyathopoma (s. str.) prestoni, Kobelt & Molleudorff, Nachr. Deuts. 



Malak. Ges. xxix, 1897, p. 136 ; id., Oat. I'neum, 1899, p. 104. 

 Cyathopoma {Cyathopoma) prestoni, Kobelt, Das Tierreich, Lief. 16, 



1902, p. 223. 



Original description : — " Testa dextrorsa, elevata, pyramidalis, 

 mediocriter et perspective umbilicata, periostraco brunneo leviter 

 induta, apice obtusula; anfr. 5, regulariter accreseentes, leviter 

 et obsolete spiraliter lirati, transversim striati, ultimas cariuis 

 obsoletis quinque (?), fere Isevis in umbilico ; sutura bene impressa ; 

 apertura fere circularis, continua, peristomate leviter iutus 

 incrassato. Alt. 2, lat. 1-5 mm." 



Hah. Ceylon: Uda Piissellawa (Z^rdSifon). 



"In form this species is intermediate betweeji C. mariec and 

 C. artaiiim, with a well-marked suture. The brown periostracnm 

 and nearly obsolete cariuae, with the almost smooth umbilical 

 area, are its distinguishing features." {Sykca.) 



