40 CTCLOPHORTD^. 



antice descendente; apertura valde obliqna, ampla, ovato-rotundata, 

 superne aiigiilata, iiitus livide ca^rulea ; ])eristoniate diiplici, 

 iiiteriori coiitinuo, albido, ad dextram expansiusculo, exteriori 

 breviter interrupto, expaiisiusculo, fusco-conieo ; niargine colu- 

 mellari subtus recedente, dextro prorsum arcuato ; umbilico latis- 

 simo, minime profundo. Operculo teiiui, corneo, 51-spirato, suturis 

 intus extusque pulchre carinatis. 



" Diam. major 26, minor 23, alt. 6 mill." 



Hah. Ceylon {E. L. Layard). 



" The sbell is easily distinguished from the other 



planorbular Cycloj^liori of Ceylon by its dark colour and depressed 

 form, which recall those of Pterocijclos Jiispidus, Pearson, by its 

 verv^ wide and shallow umbilicus, and by the size and peculiar 

 position of the aperture. The whorls of the operculum, which is 

 of a clear horn-colour, are less closely wound than in C. cratera." 

 [Benson.) 



60. Theobaldius phajnotopicus, Benson. 



Cydostoma p/t(p7jotopicum, Benson, A. M. N. H. ser. 2, viii, 1851, 

 p. 190; X, 1852, p. 271 ; Pfeiffer, Conch.-Cab., Cyclostomaceen, 

 1854, p. 38(5, pi. 50, figs. 20,21. 

 CycJophorus p]taenotupict(s, Pfeiffer, Zeits. Malak. viii, 1851, p. 144 ; 

 id.. Cat. Phaiieropn. Brit. Mus. ]852, p. 70; id., Mnn. Pneuni. 

 1852, p. 100; Benson, A.M. N. II. ser. 2, xiv, 1854, p. 415; 

 Adams, Gen. Eec. Moll, ii, 1855, p. 280; Theobald, J. A.S.B. 

 xxvii, 1858, p. -322; Reeve, Conch. Icon, xiii, 1861, (h/cloj}horus, 

 pi. 18, fig. 91 ; Hanley & Theobald, Conch. Ind. 1870, pi. 4, fig. 3. 

 Myxostoma phcenotopicum, Theobald, Cat. Shells Brit. India, 



1876, p. 37. 

 Cydophorus ( Theobaldius) phaenotopicus , Nevill, Hand List, i, 1878, 



p. 277. 

 Theobaldius 2^haenotopicus, Kubelt & Mcillendorff, Nachr. Deuts. 

 Malak. Ges. xxix, 1897, p. 105; id., Oat. Pneiim. 1899, p. 17; 

 Kobelt, Das Tierreich, Lief. 16, 1902, p. 95; id., Conch.-Cab., 

 Cyclophoridae, i, 1907, p. 567. 

 Original description: — "Testa subaperte iimbilicata, depressa, 

 subdiscoidea, tenui, non nitente, striis scabris, acutis, radiatis, 

 elevatie, aliis, impressis spiralibus, sub lente vix percipiendis, 

 prope suturani decussatis, rufo-fusca, strigis augulatis, interruptis 

 picta ; spira depressa, apice prominula, sutura impressa ; an- 

 fractibus Ah convexis, sensim accrescentibus ; apertura circulari, 

 peiistomate tenui, recto, marginibus approximatis ; umbilico 

 profundo, perspective. Operculo corneo, tenui, concaviusculo, 

 arctispirali ; anfracfibus 7-8. 



"Diam. major 12, minor 10, alt. 4 mill." 



Hah. India : Darjeeling, Sikkim {StoliczTca, Theohald, H. F. 

 Blanford, Maimvaring). 



"Although the larger of my two specimens does not bear the 

 signs of age, yet, even if the peristome should be found to acquire 

 a further development, the peculiar dull and sharp scabrous 

 sculpture, as well as the narrower umbilicus, will serve to prevent 



