i '>0 MOLLUSCA TKRRESTRIA ET FLUVIATII.IA 



(c) AMiMllIJi.V II nToiiAi.iA) 



F;mi. AURIGULACEAE, Rlaiiiville 



Testa spiratii, qiioad fbfiuain varia: spira brevis, apice plenimqiie obtusa, 

 anlractus liiiiiidiusculi, suliira distincla coiijiiiicti, iiltimiis cúcteris ainplior: colu- 

 iiiella sacpissiiiie plicala, pariele aperiuriali sacpe dontato vel plioato: [)eristoma 

 aciilMiii, lertum v. expansum, saepf iiiciassalmn. (leiitaluiii v. tiaiisverse costa- 

 liini. — Aninial aoivm per iir!,'aiia piiliiiiiiiilnis aiialoiia spiraiis: nrijaiiico (iperciilu 

 deslilulum; liermapliiadiluin; cajiito suhlol)iilij-ai)peii(lieulato, liiigiia denlibiis 

 piiiriinis, uiicinatis arniata, rostro lnevi, leiitaculis "2 subcylindricis, non retracli- 

 liliiis, onjlis sessilibus prope lentaculorum iiileruam basiri, pede elongato, pallio 

 aciilo, margine crasso, iiec super testam rellexo. In umbrosis bumidis ad rivulos 

 ariioresipie, in limosis saisis. plerumipie ad liltora marilima suii iapidihus maris 

 aeslu ipiutidie submersis, toliiis fere Kui-opae, liidiae, liisiilariiiii allanlici ma- 

 ris, etc. 



Famii. sic dicta, quod testae apertura auiem, quoad coniuiuiatioiiem, quu- 

 dainmodo rcfert. 



Í.-'' Subfaiii. MELAMPEA, ITeilTer 



(>()liiuiella sempor piirala: paries apcrturialis et peristomalis iriargo dexter 

 dcntati v. inermes; peristimia rrctuin. aiuiiun. — Animal ampbibiuni aiil iii aquis 

 submarinis pro[ie lliiviíjruni ostia degens. 



Gen. Melampus, Montfort 



Testa ovato-coiioidea v. subovata, solida; spira breviusrula; coiuniella ib- 

 slincte piicata; apertura elongata, angustata, pariote aperiuriali inermi, v. deiiU- 

 bus plieisve I-o niunilo: perislonia reeiiini, dextro margine aculo, intus inenni 

 V. Iiaiiiverse ccistato aiil suicatu. — Animal tentaculis 2 brevibiis, eompressis, 

 sublriangularibus, pede rolinidato, mediu transverse suleato, antice posticeque 

 vicissim repente, nec ut in Pedipe. — Ad Europae Indiaeque occidentalis rupes 

 arenosaque mai'itima. 



Labiv ineriiii; plicix pariclnlihuti biiiis 



Molampus cviymis, Lowe 



Testa ovato-turbinata, subconica, solida, nilidula, castaneo-rufescens, striis 

 exilissimis, obsoletis, spiralibus, eonfertim instiucta; spira abbreviata, conoidea. 



