58 IIELIX t?. 12. 



1*21. H. dcmissa Binncy. ^ 



T. dcpresso-convexa , pcrforata, luteolo-cornea, nilens; anfr. 

 niinute striati; apertura transversa; laJjruni simplex, acutuni; 

 basis {)laniuscula, medio subimpressa, glabra; unibilicus parvus. 

 — Diam. ^8 poll. (Binn.) 



Helix demissa Binn. \n Bost. journ. IV. p. .36 1. t. 16. f. 16. 

 Ilabital in Pennsylvania. 



0])s. Differt ab II. ligera spira deprcssa. (Binn.) — An cjus varielas? 

 An forte eadem ac Nr. 120? 



122. H. succinca Pfr. 



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

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

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

 luni, margine columellari suln-ellexo, perforationem obsolelani 

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

 Ilelix succinea Pfr. in Proc. Zool. Soc. 18io. p. 89. 



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

 l3. Fascia obsolcta rubra ad peripheriam. 



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

 (Guming). 



123. H. insignis Orbigny. ^ 



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

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

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

 Ilelix insignis (Helicella) Orh. synops. p. 5. 

 _ _ Or6. voy. p. 247.'t. 26. f. 14— 17. 



liabitat in provincia Guayaquil Columbiae. 



124. H. hydatina Rossmasslcr. 



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

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

 planulatus; apertura depressa, obliquc lunaris; pcrist. rectum. 

 acutum, simplex, niargine dextro anlrorsum subarcuato, columel- 

 lari vix reflexiusculo. — Diam. maj. 6/j. min. 5/2, alt. 3 mill. 

 (CoH. Nr. 67.) 



Ilelix Injduiina Rossin. YIII. p. 36. f. 529. 

 _ _ Chcmn. ed. II. Helix N. 221. f. 65. f. 18 — 21. 



— diapliana Miildf. Miis. (testc Rossm.) 

 Ilelicella diaphana Beck ind. p. 7. 



Ilabitat in insula Corfu (Ziegl."^, Neap. 'Philipi^i), prope Smyrnam 

 (Roth diss. p. \o\ 



