116 CYCLOSTOMUS §. 2. 3. 



nuum, breviter adnatum, vix expansiusculum, — Operc.? — 

 Long. 7, diam. 5 mill. Ap. fere 4 mill. longa (Mus. Cuming.) 

 Cyclostoma gradatum (Cyclostomus?) Pfr. in Pioc. Zool. Soc. 1854. 

 p. 303. 



Habitat . . . ? 



29. C troclilea Benson. 



T. perforata, oblongo-pyramidata, solidula, alba, sublae- 

 vigata; spira elongato-conica, apice acutiuscula; anfr. 5^ ^ sub- 

 angulato-convexi, superne unicarinati, ultimus tricarinatus : 

 carina 1 superiore, 1 mediana, tertia umbilicum angustura, 

 subpervium cingente; apertura parum obliqua, circularis, 2/7 

 longitudinis aequans; perist. simplex, rectum, fere continuum. 

 — Operc? — Long. 3, diam. 2 mill. (Mus. Benson.) 

 Cyclostoma trochlea Bens, in Ann. and Mag. 2d. ser. VIII. p. 189. 



— — Chemn, ed. nov. p. 380. t. 49. f. 29. 30. 

 Cyclostomus trochlea Pfr. Mon. Pneum. p. 205. n. 26. 



— — Gray Cat. Phan. p. 144. 



— — (Tropidophoia) //. et A. Adams Gen. rec. MoU. 



II. p. 292. 



Habitat in raontibus Neileherries Indiae. 



§. 3. 



30. IfladaKRSeariensis Cray. (Ch. ed. nov. p. 

 290. t. 39. f. 1. 2.— Cray Phan. p. 144. — Tro- 

 pidophora Ad. Gen. p. 292. — Cyclost, Duisabonis 

 Grat.) Mon. p. 205, 



31. C. BoiYlnl Pfr. 



T. obtecte perforata, globoso-tui-binata, tenuiuscula, spi- 

 raliter obsolete lirata, griseo et fulvido variegata, spadiceo 

 multifasciata ; spira tui-binata; anfr. fere 6 turgidi, celeriter 

 accrescentes, ultiraus ventrosus, pei-ipheria carina 1 compressa, 

 albida munitus , circa umbihcum confertim spiraUter hratus ; 

 apertura subverticahs, oblongo-rotundata, intus nigricanti-san- 

 guinea; perist. tenue, ad anfr. contiguum subemarginatum, 

 superne productum, margine dextro et basah late patentibus, 

 columehari angusto , supra umbihcum dilatato , adnato. — 

 Operc. ? — Diam. maj. 29, min. 23, alt. 25 mill. Ap. intus 

 15 miU. longa, 13 lata. (Mus. Cuming.) 



Cyclostoma Boivini (Cyclostoraus) //)•. in Proc. Zool. Soc. 1856. p 338. 



