262 HELIX §. 53. 



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



— — Chemn. ed. II. Helix N. 308. t. 53. f. 12. 13. 

 Habitat , . . ? (Ex Antillis oriunda dicitur.) 



685. H. intorta SowerbY.Mr/Jp. U^^.O^^^S. 



T. imperforata, depresso-globosa , tenuis, diaphana, subtilis- 

 sime striata, coloribus valde varians; sutura linearis, plerumque 

 rufo - marginata ; anfr. 4^2 vix convexiusculi , supremi depressi, 

 ultimus subtus inflatus ; columella oblique descendens, acuta, sub- 

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

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

 (CoU. Nr. 408.) 



Helix intorta Sow. in Proc. Zool. Soc. 1840. p. 1 68. 



— — Reeve Conch. syst. II. t. 164. f. 10. 



— — Pfr. Symb. II. p. 3 1 . 



— — Deless. recueil t. 38. f. 7. 



— — Chemn. ed. II. Helix N. 307. t. 53. f. 8 — 11. 

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



Obs. 1. Variat colore albido, citrino , roseo, sulphureo vel cinnamomeo, 

 fasciis inlerdum nullis, plerumque 3 pallide rufis vel nigncanlibus, peristomate 

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

 meratae.) 



Obs. 2. Persimilis sequenli; differt anfractibus convexioribus, sensim ac- 

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



686. H. Valenciennesii Eydous. V; 



T. imperforata, globoso-depressa, tenuis, diaphana, nitidula,' 

 minute striata , alba ; spira parva, superne depressa ; sutura linea- 

 ris, superne rufo-marginata; anfr. 4 planiuscuH, 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 Valenciennesii Eyd. in Guerin mag. 1838. t. 115. f. 2. 



— — Deless. recueil t. 38. f. 8. 



— — Chemn. ed. II. Helix N. 304. t. 53. f. 1. 2. 

 Habitat in insula Capul Philippinarum (Cuming). ' 



687. H. fiiaris Valenciennes. ,;„,y. , '■■•/,■:. i''v-V"^.;.^'/'(i'/„ 



//Afj.^/r.i^Hi A':/j^^/^ 



T. imperforata , depresso-globosa , tenuis , slriis incrementi ' 

 vahdis notata, albida, epidermide pallide cornea, decidua in- 

 structa; spira parum elevata, obtusa; sutui^a linearis, albo-mai^gi- 

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

 obliqua, margine granulosa; apertura dilatata, lunaris; perist. 



