104 IIELIX §. 35. 



642. H. cimcx Pfr. 



T. umbilicala, discoidea, tenuis, subtiliter capillaceo-striata, 

 haud nitens, pallide cornea; spira planiuscula; anfr. 5 con- 

 vexiusculi, lente accrescentes, ultimus non descendens, teres; 

 umbilicus perspectivus, Y3 diamelri subaequans; apertura parum 

 obliqua, parva, rotundato-Iunaris ; perist. simplex, rectum, mar- 

 ginibus convergentibus. — Diam. maj. 3, min. 2V2, alt. 1 V3 mill. 

 (Mus. Cuming.) 



Helix cimex Pfr. in Proc. Zool. Soc. 1854. p. 288. 



— — Reeve Gonch. ic. n. 1411. t, 201. 



— — (Hyaiina) Pfr. Vers. p. 125. 



Habitat «Lord Ho\ve's Island» Novarum Hebridarum (Macgillivray). 



* * * 



643. quadrataFcr. (Goll. 271. — Rv. n. 619. t. 110. — 



Disciis Pfr. Vers. p. 125. — //. Kingi Pfr. — 



Discus quadratus Ad. Gen. p. 117.) Mon. III. p. 108. 



644. pusio King. •{• - I. - 1 1 6. 



645. spirorbis Dcsh. ^ - III. - 1 1 0. 



* * * 



646. H. ammonoceras Pfr. 



T. umbilicata, depressissima, tenuis, arcuato-striata, nitida, 

 pcllucida , paliide cornea ; spira minuta , subimmersa ; sutura 

 profunda; anfr. fere 4 planiusculi, rapide accrescentes, ultimus 

 non descendens, depressissimus, peripheria obsolete angulatus, 

 basi angustior; umbilicus latus, Va diametri subaequans; aper- 

 tura obliqua, subtriangulari-lunaris; perist. simplex, rcctum, 

 marginibus vix convergentibus, supero substricto, antrorsum 

 dilatato, basali arcuato. — Diam. maj. 4^2, min. 3^/4, alt. vix 

 IV2 Dfiil'- (Mus. Cuuiing.) 



Helix ammonoceras Pfr. in Proc. Zool. Soc. 1834. p. o4. 



— — Reeve Gonch. ic? n. 1338. t. 191. 



— — (Ammonoceras) Pfr. Vers. p. 122. 



llabitat Santa Ana Novae Granadae. 



647. Clymcne Shuttl. (Goll. 272. — ifc. n. 91 4. t. 143. 



— Amnionoceras P/")'. Vers. p. 122.) Mon. III. p. 1 1 f . 



Obs. Excludatiir hoc loco //. Shullleworthi Pfr. = Planorhis ana- 

 tinus Orb. teste Cl. Shuttleworlh (Diagn. n. Moll. Nr. 7. p. 137 et 

 Notit. malac. I. p. 28). Testam descriptam, llelicibus nonnullis persimilem, 

 ab amico H, Cuming nomine Helicis vifrinac SliutU. designatam acceperam, 



