104 HELIX §. 21. 



y^ diametri subaequaiis; aperlura verticalis, lunato-subcircu- 

 laris, intus margaritacea; perist. simplex, rectum, marginibus 

 conniventibus. — Diam. maj. 26, min. 22, aJt. 11 miii. (Mus. 

 geol. Lond. ) 



Helix Franklandimsis Forbes in Voy. Rattiesnake. App. p. 379. 



t. 2. f. 2.' 

 Habitat aLizard-lslands » Australiae (Macgillivray). 



Obs. Persiniilis praecodenti; differt slriis distinctis, umbilico majore, 

 apertura minore , magis rotundata, subverticaii. 



457. H. Sandwicensis Pfr. 



T. umbilicata, discoidea, striata, nitidula, luteo-cornea; 

 spira plana; sutura impressa; anfr. 5 — 6 lente accrescentes, 

 planiuscuii, ullimus antice non descendens, depressus, basi vix 

 convexior; umbilicus latus, dimidium fere diametri occupans; 

 apertura parum obliqua, lunari-rotundata; perist. simplex, 

 rectum, tenue, marginibus conniventibus. — Diam. maj. 18, 

 min. 15, alt. 5 miil. (Mus. Cuming.) 



Helix Sandwicensis Pfr. in Proc. Zool. Soc. 1849. p. 12 8. 

 Habilat in insulis Sandwich. 



* 



458. omalomorpha Orb. (Coil. 199? — Desh. iu F^r. 



hist. I. p. 84. N. it2. — Palula Alb. p. 65.) . . Mon. I. p. -109. 



459. vitrina Wagn. {Coll. 200. — Chemn. ed. nov. 



II. p. 101. — Paluia Alb. p. 65.) • • • ■ - - - '•10. 



460. ammoniformis Orb. {Desh. 1. c. p. 9. N. 11. 



t. 69B. f. 1.) - - - tlO. 



461. aulacospira Pfr. [Chemn. ed. II. Helix N. 1094. 



t. 160. f. 24 — 26. — Nov. Hebrid.) - - - 110. 



462. concolor Fer. (Goll. 201. — Chenu I. c. t. 8. 



f. 15. t. 12. f. 1. — Desh. 1. c. p. 98. N. 134. 



— C/iemre. ed.nov. 11. p. 109. — Patula ^/6. p. 65.) - - -110. 



463. sportella Gould. -{■ (Proc. Bost. Soc. 1846. p. 



167; Exped. shells 1851. p. 37. f. 42.) - --111. 



464. orbicula Orb. (Coll. 202. — Desh. 1. c. p. 86. 



N. 115. t. 83. f. 5. 6. — Chemn. ed. nov. II. p. 



101. — Patula Alb. p. 65.) - - - 111. 



465. H. obscurata Porro. 



T. umbilicata, depressissima, discoidea, striatula, nitida, 

 fusco-cornea ; spira plana; anfr. 57^ subplanulati, celeriter 

 accrescentes, ultimus latus, depressus, peripheria subangulatus, 

 antice non descendens; umbihcus mediocris, Y5 diametri sub- 

 aequans; apertura obliqua, late lunaris; perist. simplex, acutum, 

 rectum. — Diam. maj. 20, min. 17, alt. 7 mill. (Coll. Rossm.) 

 Helix obscurata Porro, Pfr. Monogr. L p. 108. N. 273. 

 — — Pfr. in Zeitschr. f! Malak. 1848. p. 114. 



