CYCLOTUS §. 9. 10. 25 



59. C. fllociiictus BciiSoai. 



T. umbilicata, turbinato-depressa, lineis confertis elevatis 

 cincta, albida, epidermide fuscula; spira conoidea, apice sub- 

 acuto, papillari; sutura profunda; anfr. 41/2 rotundati, juxta 

 suturam laevigati, ultimus cylindraceus ; apertura obliqua, sub- 

 circularis, superne vix angulata, prope umbilicum conicum, 

 perspectivum leviter sinuata; perist. duplex: internum breviter 

 porrectum , externum anguste patens. — Operc. extus conca- 

 vum, anfractibus paucis, margine scabre elevato. — Diam. 

 maj. 3, min. 2^/0, alt. ^i/.^ mill. (Mus. Benson.) 



Cyclostoma filocinctum Bcns. in Ann. and Mag. 2d. ser. VIII. p. 188. 



— — Chemn. ed. nov. p. 379. t. 49. f. 26 — 28. 



Cyclostomus? filocincfus Pfr, Consp. n. 325; Mon. Pneiim. p. 221. 

 n. 54. 

 — — Gray Cat. Phan. p. 155. 



Cyclotus filocinctus Bcns. in Ann. and Mag. 1854. XIV. p. 416. not. XV. 

 p. 16. 

 — — H. et A. Adams Gen. rec. Moll. II. p. 275. 



Habitat in montibus Neilgherries. 



§. 10. 



60. variesatllS SwainS. (Coll. 32. — Gray Phan. 



p. 23. — Ad. Gen. p. 275. — Cyclost. jdaiiorbu- 



lum Sow. — Cycl. cornu vcnatormm Pet.) . . Mon. p. 39. 



61. pianorbiiiiiS| liain. {Ad. Gen. p. 275. — Het/x 



cornn vcnatoraim Gm. Syst. p. 3641. n. 227? — 

 Ddlw. Cat. II. p. 910. n. 55? — Cyclostoma fla- 

 norbula Lam., Desh. Traite elem. t. 82. f. 3. 4. — 

 Pterocyclos planorbulus Pfr. Mon. Pneum. n. 3. — 

 Gray Phan. p. 26.) - - 43. 



* * 



* 



62. ? inconiptns Soiv. (Coll. 33. — Ad. Gen. p. 275. 



— Pferocyclos? incompfi/s P/'r. Mon. n. 1. — Ch. ed. 

 nova p. 235. n. 9. — Gray Phan. p. 25. — Nova 

 Granada. Conf. Bens. in Ann. and Mag. 2d. ser. 

 XV. p. 16.) _ _ 42. 



II. Opisthoporus Benson. 



Operculum calcareum, circulare, crassiusculum, raultispi- 

 ratum, duplex, utrinque concaviusculum, disco interno epider- 

 mide cornea lubrica vestito, externo calcareo, scabi'o, arabobus 

 lamina spirali, erecta recurva interposita junctis , anfractuum 

 interstitiis interne vacuura praebentibus, margine circumdante 

 concavo. 



