58 HELIX §. 12. 



121. H. demissa Binney.,-i)#7^^-^--'---^'^<?=^- 



T. depresso-convexa , perforata , luteolo-corriea , nifens; anfr. 

 6 minute striati; apertura tran&vcrsa; labrum simplex, acutum; 

 basis planiuscula, medio subimpres^a-y-£labra ; umbiiicus parvus. 

 — Diam. y^ poll. (Binn.) 



Udix demissa Binn. in Bost. journ. IV. p. 361. t. 16. f. 16. 

 Habitat in Pennsylvania. 



Obs. Differt ab H. ligera spira depi'essa. (Binn.) — An cjus varietas? 

 An forte eadem ac Nr. -lao? 



122. H. succinea Pfr. . -X fJ/.JJr, . 



T. depressa, obsolete subperforata , tcnuis, pellucida , nitida, 

 succinea; sutura mediocris, submarginata ; anfr. 5 celeriter accres- 

 centes, vix convexiusculi ; apertura lunaris; perist. simplex, acu- 

 tum, margine columellari subreflexo, perforationem obsolelam 

 tegente. — Diam. maj. 10, min. S'/^, alt. 6 mill. (Goll. Nr. 66.) 

 Helix succinea Pfr. in Proc. Zool. Soc. 1845. p. 39. 



— — Chemn. ed. II. Helix N. 541. t. 87. f. 6 — 8. 

 /?. Fascia obsoleta rubra ad peripheriam. 



Habitat in provincia Albay insulae Luzon , var. in insula Mindoro 

 ( Cuming ). 



123. H. insignis Orbigny. ■{■ 



T. perforata, orbiculata, subconvexa, apice oblusa, tenuis, 

 diaphana, laevigata, brunneo-flavicans; anfr. 4; apertura rotunda; 

 labrum tenue. — Alt. 4 , diam. 8 mill. ( 0. ) 

 Helix insignis (Helicella) Oi^b. synops. p. 5. 

 _ _ Orb. voy. p. 247.'t. 26. f. 14 — 17. 

 Habitat in provincia Guayaquil Golumbiae. 



124. H. hydatina Rossmclssler. 0^'. 



T. perforata, depressa, albida, peflucida, striatula; sutura 

 marginata; anfr. 5 planiusculi, ultimus non dcscendens, basi sub- 

 planulatus; apertura depressa, oblique lunaris; perist. rectum, 

 acutum, simplex, margine dextro antrorsum subarcuato, columel- 

 lari vix reflexiusculo. — Diam. maj. 6/4, min. S'/;, alt. 3 mill. 

 (Goll. Nr. 67.) 



Helix hydatina Rossm. YIII. p. 36. f. 529. 



— — Chemn. ed. II. Helix N. 224. t. 6S. f. 18 — 21 . 



— diaphana Miihlf. Mus. (teste Rossm.) 

 Helicella diaphana Beck ind. p. 7. 



llabitat in insula Coi^fu (Zicgl.), Neap. (Philippi), pi^opc Smyrnam 

 (Roth diss. p. 15). 



