1 "50 

 TOT? TIT I, OS A. ' •' 



spiiii oblongo-turrita, apice acuti.iscula ; anfr. 8 plaiiuisculis, 

 ultiiDo basi acute et promineuter cannato ; apertura vertical] basi 

 subproducta; perist. continuo, auvantiaoo, supenie bveviter adnato, 

 niargM-ie dextro sii)istroque reflexo-pateiitibiis, basali deorsum 

 ,lihitat..,canalicMdato; canali extus lato, intus liiieari.— Operculum .^ 



'• Long. 2U, diam. 7 mill." {I'Mf^r.) 



H>il>. Ceylou {Tern pieman); Maturata (-S'/HiOJi). 



274. Tovtulosa thwaitesi, Pfeiffer. 



Cataulus thimitesi, Pfeiffer, Proc. Zool. Soc. 18o2, p. 147 ; id., 

 Mon. Pneum. 1852, p. 13«; id., Cat. Phaneropn Brit. Mus. 

 1852, p. 97; id., Conch.-Cab., Cyclostomaceeo I8o4 p. .>8/, 

 pi 49 frrs 9 10; Sowerbv, Thes. Conch, m, 1804, pi. 264, fig. (), 

 var ti'o- Is ; II. Nevill, Eiium. Helic. Pneum. Ceylou, 18/1, p. ■■> 

 (C. tlmaitesii) ; Hanley & Theobald, Couch. Ind. 187o, p . lUb, 

 L. G; id., op. cit. 1876, p. xii (+ C. cuminyi)- Keeve Conch, 

 tfon. XX, Pupiuid,o, 1876, pi. 6, tig. 54 ; Theobald Cat. bhells 

 Brit. India, 1876, p. 41; Nevill, Hand List, i 1«'8' P- f«^: 

 Jousseaume. M6ni. Soc. Zool. France, vii, 1894, p. dii (+ c. 

 cimingi) ; Kobelt & Mollendorff, Nachr. Deuts Malak. &«?. xxix 

 1897, p. 143; Sykes, Proc. Malac. Soc. lu, 1898, p. 66 ( + C. 

 ctmiingi and C. duplkatus) ; Kobelt & MoUendorft, Cat. Pneum. 

 1899, p. 39 ; Sykes, Jouru. Malac. xii, 1905, p. oy. 



Tortulosa thwaitesi, Adams, Gen. Rec. xMoU. u, 18o6, p. 28o. 



Tovtulosa {Eucataulus) thivaitesi, Kobelt, Uus lierreich, Liet. 1(., 

 1902, p. 288. . ^^ ^^ ... ^ 



Cataulm <^refjarim (? C. thwaitesi) (nom nud. , II. Nevill Emun 

 Helic. Pneum. Ceylon, 1871, p. 5; Theobald, Cat. shells Brit. 

 India, 1876, p. 41 ; C . Nevill, Hand List, i, 1878, p. 29- . 



Original description :— " C. testa vix perforata, subfusiformi- 

 turrita solida, longitudinaliter coufertim costulata, vix mtidula, 

 violaceo-fusca ; spira ovato-turrita, apice acutiuscula ; sutura 

 impressa ; anfr. 7-7 ^i, convexiusculis, ultimo vix attennato ; caniui 

 basali validissima, compressa, auguLitim pateute, alba ; apertura 

 verticali, circular!; perist. duplice albo : interiio basi protunde 

 inciso, externo ad anfr. peuultimum exciso, cseterum lucrassato, 

 rellexo, basi cauali mediocri perforata. 



" Long. 19, diam. 7 milL^' {Pfr'ffer.) 



Ilab. Ceylon {Thivaitcs). 



Subgenus TORTULOSA, Graij. 



Tortulosa, (^ray, Proc. Zool. Soc. 1847, p. 177; Kobelt, Das 



Tierreich. Lief. 16, 1902, p. 288 (subgenus). 

 Cataulvs ,part.), Pfeitfer, Zeits. Malak. viii, 1851, p. 149 ; (part: 



" abnormes •■) ; id., Mon. Pneum. Suppl. 1, 18o8, p. 8r. 



Type (only species), Turlo tortuosus, Chemnitz. 

 Range. ludia. Nicobars. 

 Shell with the last wliorl solute. 



