111 



na(o-depressa vel subdiscoiden, anfractus ullimus antice 

 soluliis, indo perlst, liberum , recdim, continuuni, in sulco 

 cireiilari otipfftili irnniorsuin. 



1. cornu vonaloriuin Sow. 3. hierii («iii'i'. 

 ?2. helioiniim Cheinii. 4. noCmeisten" Trosrli. 



XIII. Cra s [)edopoma Pl'r. 

 Operc. corneuni, soüduin, nrolissimo spiralmn, mieleo 

 cenU'ali, pagina externa plai)a, intoina proininerUia circu- 

 lari in anfractu i)cnnUimo niiinila, nicdio profunde conoava. 

 Testa sublurbinnla , rimata, ard'raftu ultimo antice subco- 

 arotato. Perlst, eontiniium, simplex. prominenllam inter- 

 num Operon li excipiens. 

 1. Inciilnm Lowe (Valvata turbinata Menke?) 



XIV. Myxo Stoma Trosch. 



Op(;rc. crassum , lamellosum , multispiinm. Testa 



aperte nmbilicata , depressa. Perist. duplex, internuni 



conlinnuni, integrum, externum sujjerne myxao lampadis 



instar rostr'atum, rostro ad anfractum penultinuim aj)presso. 



1. breve Marlyn. (Peliverianum Wood.) 



XV. Pterocyclos Bens. 



* Opore. testaceiim, mullispirum, spirallter lameilatum, 

 exlus alte convexum, intus concavum. Testa lale umbill- 

 eata, subdiscoidea. Peilst. <iup!ex, internuni breve, margine 

 dexlro incisuni. exteiuum .siijicrne in rostrum leetiforme di- 

 latatum. 



1. bilabialus Sow. .'3. Prinsepi v. d. Buseh. 



2. angnliiei'us Soul, (splra- 4. ])ietus Troseh. 

 culumSow. ?) .5. Albersi Pfr. njss. 



XVI. Aeicula Ilartni. 

 Operc. tenuissimum , liyallnum, {)aucispirun). Testa 

 subimperforata, eylindrlca. Perist. subincrassatum, margi- 

 nibus subparaiiells, callo lemii junctis. 

 1. s[)ectabilis Rossm. 2. fusca Walk. (Auric. ii- 



neata Draj).) 

 ß. polita iltu). 



? XVII. Geomelania Pfr. 

 Operc. . . . ? Testa irnjici-forata, tiirrlla. Apertura Inte- 

 gra, efVnsa. Perlst, simplex, expansum, marginibus junctis, 

 basali in ai)pendicem linguiformcm subtortum producto. 

 1. jamaicensis Pfr. 



