262 IIELIX §. 53. 



Helix Najas,Phil. Icon. II. 15. p. 185. lleli.x t. 9. f. 5. 



— — Chemn. cd. II. Helk N. 308. t. 53. f. 12. 13. 

 llabilal . . . ? (Ex Antillis oriunda ciicitur.) 



685. H. intorta Sowcrby. 



T. imperfofata, dcpresso-giobosa , tenuis, diapliana, sublilis- 

 sime striata, coloribus valde varians; sulura linearis, plerumque 

 rufo-niarginata; anfr. 4/2 vix convexiusculi, supremi depressi, 

 ultimus subtus inflatus; columella obliquc descend^ens, acuta, sub- 

 excavata; apertura lunato-rotundata; perist. simplex , reflexius- 

 culum. — R. a. — 4 : 7. — Diam. maj. 32, min. 27, alt. 20 mill 

 (Coll. Nr. 408.) 



Helix intorta Sow. in Proc. Zool. Soc. 18 40. p. 1 68. 



— — Reeve Conch. svst. II. t. 16 4. f. 10. 



— — Pfr. Symb. II. p. 3 1 . 



— — Deless. recueil t. 38. f. 7. 



— — Chemn. ed. II. Helix N. 307. t. 53. f. 8 — 1 1. 

 Habilat in insulis Bohol, Capul, Negros, Siquijor (Cuming). 



Obs. I. Variat colore albido, citrino , roseo, sulphureo vcl cinnamomeo. 

 fasciis iiilerdum nullis, plcrumque 3 pailide rufis vel nigncanlibus, perislomale 

 albo aut rufo vel roseo-marginato. (Conf. var. 12 a Cl. Sowerby 1. c. enu- 

 meratae.) 



Obs. 2. Persimilis sequenli; dififert anfraclibus convexioribus, sensim ac- 

 crescentibus , ultimo inflato , apertura lateraliter non dilatata , perist. vix reflexo 



686. H. Valcnciennesii Eydoux. 



T. imperforata, globoso-depressa , tenuis, diaphana, nitidula, 

 miiiutc striata, alba; spira parva, superne depressa; sulura linea- 

 ris, supernc rufo-marginala; anfr. 4 planiusculi, ultimus magnus, 

 obsolete angulatus; columella declivis, subexcavata; apertura 

 lunato-elliptica; perist. simplex, expansum. — R. a. = 1 : 2. — 

 Diam. maj. 32, min. 27, alt. 18 mill. (Coll. Nr. 409.) 



Helix Valencientiesii Eyd. m Guerin mag. 1838. t. 115. f. 2. 



— — Deless. recueil l. 38. f. 8. 



— — Chemn. ed. II. Helix N. 304. t. 53. f. 1.2. 

 Habital in insula Capul Philippinarum (Cuming). 



687. H. filaris Valencicnnes. 



T. impcrforata, depresso-globosa, teimis, striis incremenli 

 validis notata, albida, epidermide pallide cornea, decidua iti- 

 structa; spitvi parum elevata, obtusa; sutiUM linearis, albo-margi- 

 nata; anfr. 4 planiusculi, ultimus obtuse angulatus; columella 

 oltlif|ua, margine granulosa; apertura dilatata, lunaris; pcrist. 



