09 U E I- I X. 



Iliilnini iri ayhxa primaeois ml Atmada in diatricta ll/wos Provinciac Bdhiensis. 

 (Jhscrvutio. Haec spccics cum sequenii inler rarissiraas tcstas aumeranda eflt. 

 //) Jlcliccs carinatae. 



2- IIELIX NAVICULA WAGN. Tab. XV. Fig. 2. 3. 



H. tcsta conica, distorta, ad basin truncata ct planulata, lutcsccntc, transvcrsim 

 fusco - fasciata ; spira rosca , fusco-fasciala; apcrtura horizontali , rccta triangulari: 

 pcristomatc rcflcxo ; margine dcxlro anfractui anlepcnultimo affixo. 



Navieula fasciata Spix Tab. XV. Fig. 2. 3. 



Tesla orbicularis, supcrnc conica, infernc truncata ct planiasima, solida. Anfractus sex con- 

 vcxi ; ultimus ventricosissimus , lalissimus , ad basin angulatus, infra angulum truncatus ct planus, 

 scrobiculisquc crebris cxaralus. Spira conica, obliqua, longiludinaliter subtilissime slriata, nilida, 

 apice aculiuscula , pcnullimo anfractu multo angustior. Apcrtura borizonlalis cum axi angulum 

 rcctum conslitucns, triangularis, lacvis, nilida, intcgra; collo circum anfractum penullimum ita tor- 

 to , ut hic ad conformandam basin contribuat. Cavitatem versus anfractus pcnultimus lineam per- 

 pendicularcm format. Rima umbilicaris angustissima , ab apcrtura valde remota. Margines aper- 

 turae aequalcs, cxpansi , rcflexi, acuti , anfractu pcnullimo et antcpcnultiino disjuncti : margo sini- 

 slcr horizontalis, supra basin non promincns dextro longitudine fcre aequalis; margo dexter obli- 

 quus , anfractui anlcpcnullimo aftixus. Color anfractus ultiini lutcus, supra carinum fasciis dua. 

 bus transvcrsis, latis , nigro - fuscis ; ad margincm aperturac extcriorem fascia lata nigra. Spira 

 rosea ; anfractus quisquc ad margincm infcriorcm fascia nigro-fusca cinctus. Apertura alba. 



Longiludo vix 8 lin. ; lat. 1 poll. 2 lin. 



Ilabiiut i/i sj-lvis aboriginibus Provinciae Bahiensis. 



(Jbscrvatio. Singulari apcrturac forma basiquc planissima hacc spccies ob omnibus Helicibus 

 divcrsissima est. 



3- HELIX PYAAMIDELLA WAGN. Tab. XVI. Fig. 1. 2. 



H. lcsta conica, trochiformi, ad pcriphcriam angulato-acuta , sublus convcxa, 

 nnpcrforala, alha, fasciis luteo-brunneis cincla; apcrtura triangulari: pcrislomale rc- 

 flexo, roseo. 



I/clicinu Pyrumidci/n Spix. Tab. XII. Fig. 1. 2. 



Tcsta conica, trochiformis , acuta, laevissima , nilida , solida, ad pcriphcriam basis angulato- 

 acuta. Casis valdc convcxa, impcrforala, lcnuissime cl radiatiin shiala. Anfractus Septem planius- 



