488 HYPSELOSTOMA. — ANOSTOMA. 



XIL Hypselostoma Benson. 



Pfr. Mon. Helic. IV. p. 325; V. p. m. — Stoliczka iu Jourii. 

 As. Soc. Beng. XL. 1871. Pt. 2. p. 172: genus Pupidarum. — 

 Pdtel Calal. 1873. p. 15. 109: genus Pupaceorum. — Tanystoma 

 Bens. olim. 



Species : 



1. tubifcrum Bcns. (Coll. i.) IV. 325. V. 437. — Stoliczka in Journ. 



As. Soc. XL. 1871. p. na. t. 7. f. 1. — Hanl. !f Theob. Conch. 

 Ind. t. 8. f. 3. — Patel Cat. p. 109. — Tanyslonia tubiferuin 

 Bens. — Birniania. 



2. Bcnsonianum W. Blanf. f V. 437. — Hanl. .Sf Theob. Conch. Ind. 



t. 8. f. 2. — Ava. 



3. H. Dayanum Stoliczka. •{■ 



« H. testa minuta, conoidea, solidula, pallide brunnea, apice 

 obtusiuscula , late profundeque perspective umbilicata; anfrac- 

 tibus 4, convexis, suturis profundis sejunctis, primo laevigato, sub- 

 raammillato, ceteris striis incrementi subobsoletis notatis, ultimo 

 maximo, fere plane voluto, supra ad peripheriam subangulato, 

 deinde sensim angustiore et ad marginem umbilici rursus obtuse 

 angulato; apertura fere verticali, vix descendente, conspicuiter 

 dilatata, subcirculari; marginibus junctis, intus crassiusculis et 

 plicose dentatis; labio adnato modice expansiusculo, bidentato, 

 dente superiore majore; labro sexdentato: dentibus duobus in 

 regione columellari sitis subdistantibus, alteris duobus, in^mar- 

 gine externo, similiter inter se remotis, sed duobus in margine 

 basali sitis approximatis, parvis. — Diam. maj. 1,1, min. 0,8, 

 alt. 1 mill.» (St.) 



Hypselostoma Dayanum Stol. in Journ. As. Soc. Beng. XL. 

 1871. Pt. 2. p. 172. t. 7. f. 2. 



Habitat Damotha prope Moulmein provinciae Tenasserim. 



Obs. oFormq simile H. Bensoniano Blanf., sed ditfert forma an- 

 fractus ultimi et dentitione aperturae. » 



* * * 



Obs. Genus Plectostoma H. Adams (Pfr. V. 4 36) synonymum est 

 Opislhostomatis Bens. inter Pneumonopoma. 



Xlll. Anostoma Fischer. 



Pfr. Mon. Hehc. L p. XVH. 1; HL p. 284; IV. p. 326; 

 V. p. 438. — Palel Calal. 1873. p. 14. 98: genus Heliaceorura. — 



