192 HELIX §. 54. 



Helix aegrotiis Reeve Conch. ic. N. 95. t. 22. 

 — aegrota Chemn. ed. II. Helix N. 1004. t. 152. f. 3. 

 Habitat in insulis Philippinis. 



Obs. Differt ah Helicis Albaiensis rar. unicolore: anfr. ultimo an- 

 gustiore, apertura minus obhqua, perisf. breviter expanso, superne non 

 depresso et columelia. 



1052. H. egreg^ia Deshayes. •{• 



T. globosa, depressiuscula, alba, Iransversim fusco-bifa- 

 sciata; spira conico-depressa, apice obtusa; anfr. 4 convexius- 

 culi, lente crescentes, ultimus depressus, convexus, basi im- 

 perforatus, ad peripheriam obtusissime angulatus; aperlura 

 lunato-circularis; perist. reflexum, incrassatum, fuscum, extus 

 marginatum; columella basi dilatata, depressa , cailosa; margo 

 sinister incrassatus, brevis. — Diam. 38, alt. 28 miil. (Desh.) 

 Helix egregia Desh. in Fer. hist. I. p. 302. N. 359. t. I 02. f. 17. 18. 

 Habitat . . .? 



1053. aurata Sow. (Coil. 554. — Reeve N. 46. t. 13. 



— Callicochlias Alb. p. t05.) Mon. I. p. 260. 



1054. zonulata Fer. (Coll. 555. — Chemn. ed. nov. 



I. p. 310. — Desh. I. c. p. 138. N. t74. — Reeve 



N. 400. t. 76. — Callicochlias Alh. p. 105.) . . - - - 261. 



1055. Najas Pfr. (Coll. 556. — Chemn. ed. nov. I. p. 



312. — /^eeveN. 484.t. 90. — Corasia ^/&. p. 1M.) - - -261. 



1056. H. obliquata Deshayes. •}• 



T. subglobulosa, candidissima , tenuiter striata; spira bre- 

 vis, obtusa; anfr. 4 planiusculi, ultimus maximus, inflatus, ad 

 aperturam obliquatus et oblique deflexus, basi imperforalus; 

 apertura ovato-lunaris, in medio dilatata, postice coarctata; 

 perist. marginatum, breviter reflexum, basi callo brevi indu- 

 tum. — Diam. 27, alt. 22 mill (Desh.) 



Helix obliquata Desh. in Fer. hist. I. p. 219. N. 293. t. 28 A. 

 f. 3. 4. 

 Habitat . . .? 



1057. H. extensa Muller. 



T. imperforata, depresso-ovata, tenuis, vix striatula, sub 

 epidermide fugacissima lutescente alba, diaphana; spira bre- 

 vissima, convexa, obtusa; sutura profundiuscula; anfr. 4 con- 

 vexi, rapide accrescentes , ultimus ventrosus, antice descen- 

 dens; coiumella vix declivis, stricta, plana, superne dilatata; 

 apertura diagonalis, ampla, lunato-ovalis; perist. tenue, undi- 

 que expansum et reflexiusculum, margine dextro arcuatim an- 

 trorsum dilatato. — Diam. maj. 28, min. 22 Va» alt. 18 mill. 

 (Mus. Cuming. ) 



