120 LIMNiEIBiE. 



236. Planorbis (Gyraulus) sivalensis (JIutton). 



riaitorbk {(Tyrauhis) sivalensis (llutton, MS.), Clessin, in Couch. - 

 Cab. 1884, p. 194, pi. 28, fig. 9. 



Oritjinal description : — Testa miuuta, compressa, solidula, pallide- 

 coniea, subtilissime striata, nitidula ; supra centre ininierso, 

 infra concava; anfr. 3|-4, lente et regnlariter accrescentes, 

 superne convexiusculi, sutura profnnda separati, inferne sub- 

 plan ulata ; ultimus infra obtuse angulatus, penultimo vix diiplo 

 latior ; apertura ovata, perobliqua ; peristoma acutum, uiarginibus, 

 callo tenuissiino conjunctis. 



Alt. 1''2. diam. 4';") mm. 



Hah. N. India, Dehra Dun (/Ieiis(»i). 



237. Planorbis (Gyraulus) hohenackeri (CJtssin). 



Planorhis (Gi/rauhis) JiohciiacAeri, Clessin, in Conch. -Cab. 1884, 

 p. 205, pi. 81, fig. 7. 



Original description: — Testa solidula, dinphana, leviter et 

 regnlariter costulata, fulvo-cornea, supra profuudissime perforata, 

 infra paruni concava; anfr. 3| celerrime accrescentes, teretes, 

 utrinque sutura profunda separati; ultimus g omuis dianietri 

 superans, ad aperturam breve descendens ; apertura luuata, 

 rectum ; peristoma acutum, fusco-labiatum ; marginibus callo 

 tenui junctis. 



Alt. 4-5, diam. 9 nnn. 



Hah. Himalayas. 



238. Planorbis (Gyraulus) huttoni (Benson). 



Planorhis {Gyraulus) huttoni (Benson, MS.), Clessin, in Conch. - 

 Cab. 1884, p. 139, pi. 18, fig. 4. 



Original description; — Testa parvula, depressa, tenuis, trans- 

 verse striata, pallide-cornea, supra plana centro immerso, subtus 

 modice umbilicata ; anfr. 3|, celerrime accrescentes, ovato- 

 depressi, sutura profunda separati, ultimus volde dilatatus, 

 penultimo triple latior ; aperturam versus paululum descendens ; 

 apertin-a ampla, valde obliqua ; peristoma acutum, margine 

 superiore produeto. 



Alt. 1, diam. 5"5 mm. 



Hah. Calcutta ; Benares. 



239. Planorbis (Gyraulus) barrackporensis {Clessin). 



Planorhis (Gyraulus) harraelporensis, Clessin, Conch. -Cab. 1884, 

 p. 125, pi. 18, fig. 7. 



Origincd description : — Testa depressa, sn])ra paulo con- 

 vexiuscula, centro immerso ; infra umbilicata; subtiliter striatula, 

 diapliana, tenuis, paulo nitidula, pallide-cornea ; anfr. :)|, ovato- 

 rotundati, utrinque anjualiter convexiusculi, angulati ; celerrime 



