74 HELIX §.31. 



ad aperturam dilatatus, basi planiusculus, vii-enti-albidus ; um- 

 bilicus apertus, angustus; apertura parum obliqua, rotundato- 

 lunaris; perist. simplex, acutum, marginibus distantibus, colu- 

 mellari reflexiusculo. — Diam. maj. 14, min. 12, alt. 6 mill. » 

 (Alb.) 



Helix filicum Kryn. in Bull. Mosc. IX. p. 201. 

 — olivetorum y? Pfr. Mon. Hel. I. p. 88. 

 Hyalina filicum Albers in Malak. Bl. IV. 1857. p. 92. 



Habitat in Tauria, nec non prope Trapezuntum (Mousson). 



443. fuliginosa GrifiT. (Coll. 190. — Dinn. Terr. Moll. 



II. p. 222. t. 3 1 et Leidy in eod. op. I. t. 9. f. 4. — 

 Rv. n. 675. t. iie. — Hyalina Pfr. Vers. p. 123. 

 — Zonites fuUginosa Ad. Gen. p. 114 et Holicella 

 fuliginosa Ad. ib. p. 118.) Mon. III. p. 83. 



444. caduca Pfr. (Coll, 191. — liv. n. 530. t. 97. — 



Hyalina Pfr. Vers. p. 123. — Helicella cadiica Ad. 

 Gen. p. 118. — Hab. Cordova, Veracruz: SaI16. — 

 p. Major, fascia castanea supra periplieriam, iinea- 

 que suturali ornata; diam. maj. 31 '/21 niin. 26, 

 alt. 15 mill. In vulcano Orizaba: Salle.) - - - 83. 



445. Griffithi Pfr. {Rv. n. 579. t. 104. — Hyalina Pfr. 



Vers. p. 123.) - - - 83, 



446. H. omalomorpka Orbigny. 



T. umbilicata, depressa, tenuis, striatula, sub epidermide 

 tenui fulvida alba; spira parum elevata, vertice subprominulo; 

 anfr. Gy^ vix convexi, ultimus latior, depresso-rolundatus, non 

 descendens; umbilicus conoideus, V3 diametri subaequans; aper- 

 tura obliqua, lunato-rotundata; perist. simplex, rectum. — Diam. 

 maj. 19V.2, min. 17, alt. 8 mill. (Mus. Brit.) 



Helix omalomorpha Orb., Pfr. Mon. III. p. 104. n. 458. 



— — Reeve Conch. ic. n. 1483. t. 209. 



— — (Hyalinaj Pfr. Vers. p. 125. 

 Discus omalomorpha H. ct A. Adams Gen. II. p. 1 1 7. 



llabitat in Bolivia. 



447. H. Natolica (Hyalina) Alfocrs. 



T. umbilicata, depressa, tenuiuscula , levissime striatula, 

 sub lente lineis spiralibus subtilissimis undatim decussata, ad 

 suturam crispata, fusco-cornea, nitida; spira paullulum elevata; 

 anfr. 7 convexiusculi , lente accrescentcs, uilimus antice vix 

 dilatatus, non descendens; umbilicus angustus, apertus, pro- 

 fundus; apcrtura obliqua, ovato-Iunaris; perist. rectum, acu- 



