106 HELIX §. 21. 



473. H. remota Benson. 



T. umbilicata, depressa, subdiscoidea , tenuis, sublaevi- 

 gata, paruin nitida, diaphana, corneo-lutescens; spira plani- 

 uscula; sutura impressa, marginata; anfr. 4^2 convexiusculi, 

 ultimus latior, depressus, non descendens, basi vix convexior; 

 umbilicus mediocris, apertus; apertura parum obliqua, late 

 lunaris; perist. simplex, rectum, marginibus vix conniventibus, 

 columellari arcuato-declivi, breviter patente. — Diam. maj. 7, 

 min. 6, alt. 3 milb (Mus. Benson.) 



Helix remota Bens. in Ann. and Mag. 2 d. ser. 1851. VII. 

 p. 263. 

 — — Chetnn. ed. U. Helix N. 933. t. 143. f. 3 — 5. 



Habitat in insula St. Helena. 



474. H. festinans (Zonites) Shuttleworth. ^ 



T. mediocriter sed perspective umbilicata, plana, tenuis, 

 striatula, lutescens, parum nitida, subtus concolor; anfr. Sy^ 

 convexi, lentissime accrescentes, ultimus non descendens, vix 

 dilatatus, basi planulatus; apertura lunaris; perist. sinjplex, 

 rectum, acutum. — Diam. maj. 5, min. 4^2, alt. 2 mili. (Sh.) 



Zonites festinans Shiittlew. Diagn. n. Moll. N. 1. p. 4. 

 Habitat in insula Palma, Canariensi (Blauner). 



475. H. juloidea Forbes. 



T. umbihcata, depressa, tenuiuscula, confertim et eleganter 

 costata, cornea; spira plana, medio immersa; sutura impressa; 

 anfr. 4 convexi, ultimus non descendens, rotundatus; umbili- 

 cus latiusculus (fere Vg diametri aequans), perspectivus; aper- 

 lura parum obliqua, lunato-rotundata, altior quam lata; perist. 

 simplex, rectum , marginibus conniventibus. — Diam. maj. 5, 

 min. 4^2, alt. vix 2 mill. (Mus. geol. Londin.) 



Helix juloidea Forbes in Voy. Rattlesnake. App. p. 37 9. t. 2. f. 4. 

 Habitat Port Molle Austrahae borealis (Macgillivray). 



476. trochilioneides Orb. (Coll. 206. — Desh. in 

 Fer. hist. L p. 85. N. 114. — Chemn. ed. nov. 

 IL p. 113. — Helix [Hyalina] trochUioides Alb. 

 p. 67.) Mon. I. p. 113. 



477. H. perdepressa Adams. 



T. late umbilicala, discoidea, strialula, diaphana, corneo- 

 albida; s])ira piana, vertice immerso; sutura profunda; anfr. 

 4V2 convexi, lente accrescentes, ultiuius superne subangulatus, 

 antice descendens, basi inllatus; apertura subverticalis, rotun- 



