383 



marginibua conniventibus, dextro flexuoso, reflexm8culo, colu- 

 mellari sursum adnato. 

 Diam. maj. 27, min. 21į, alt. 23 mill. 



Nearly allied to H. coniformis, F^r., from which it differs by its 

 whorls being less convex, tbe aperture elliptically produced, and the 

 peristome. 



įĮ^i'l I 8. Helix PHTHisiCA, Pfr. H. testą imperforata, trochiformi, 

 ^^jLU^ solidula, striatula et rugis distinctis subdistantibus, antrorsum 



\jSP' ^ descendentibus sculpta, opaca, sordide alba ; spira regulariter 

 conica, acutiuscula ; anfr. 5 planinsculis, ultimo vix descen- 

 dente, paulo convexiore, subangulato, basi virenti-fulvo, radiato- 

 striato, suleis nonnidlis spiralibus notato, nitido ; columella 

 declivi, compressa, strictiuscula, lata, subexcavata ; apertura 

 perobliqua, truncato-eUiptica ; perist. subincrassato, margini- 

 bus mx convergentibus, dexfro breviter reflexo, antrorsum ar- 

 cuato, basali lato, patente. 

 Diam. maj. 23, min. 18, alt. 20 mill. 



This sbell differs from H. vexillaris, Pfr., by its solid structure, 

 the spire being highly conical, the distant folds, the peristome, &c. 



9. Helix xiphias, Pfr. H. testą umbilicata, depressissima, te- 

 nuiuscula, oblique striata, albido-cornea.fasciis 4 angustis casta- 

 neis, medianis 2 earince acutcB, albce contiguis, ornata ; spira 

 vix elevata vel subimmersa ; sutura carina marginata ; anfr. 

 5 convexiusculis, lente accrescentibus, ultimo non descendente ; 

 umbilico į diametri ceąuante ; apertura perobliąua, angulato- 

 lunari ; j}erist. simplice, recto, marginibus subconvergentibus, 

 dextro antrorsum arcuato, columellari subincrassato, basi no- 

 duhim callosum gerente. 



Diam. maj. 18, min. 15į, alt. 4^-5 mill. 



/3. Paulo minor, fusca, fasciis ohsoletis. 



To be compared with H. entomostoma, Jacq. Voy. Pole Sud, Atl. 

 pi. 7. f. 22-25. 



10. Helix SEBACEA, Pfr. H. testą umbilicata, conoideo-semi- 

 globosa, solidula, substriata, parum nitida, sebacea ; spira 

 convexo-conoidea, obtusa ; sutura submarginata ; anfr. 6 con- 

 vexiusculis, lente accrescentibus, ultimo 7ion descendente, ob- 

 solete angulato ; umbilico aperto, \ diametri vix reguanfe ; 

 apertura perobligua, lunato-ovali ; perist. subsimplice, margi- 

 nibus convergentibus, dextro recto, antrorsum arcuato, basali 

 subincrassato, ad umbilicum vix dilatato. 



Diam. maj. 17^, min, 15, alt. 10 mill. 



11 . H. EUSTOMA, Pfr. H. testą umbilicata, depressa, striatula 

 et quincuncialiter punctata {pilosal), aurantiaco-fusca ; spira 

 planą; anfr. A\ convexis, ultimo alto, injiato, antice sensim 

 descendente et rufescente, basi circa umbilicum infundibuli- 



