344 HELIGES ADDENDAE. 



207 ''^. H. Massoni Behn. 



T. perforata, turbinato-lenticularis, carinata, soiidula, leviter 

 ruguloso-striata et sub lente tenuissinie decussata, nitidula, fulva; 

 spira conoidea , obtnsula; sutura marginata: anfr. 3 convexius- 

 culi, 2 ultimi supra carinam imjn^essi, ullimus non desccndens, 

 basi nitidior, modice convexus; apertura subdiagonalis, lunato- 

 rhombea ; perist. simplex, rectum, margine columellari superne 

 in laminam triangularem dilatato, patente. — Diam. maj. 18, 

 min. 16, alt. 8 mill. (Mus. Guming.) 



Helix Massoni Behn in sched. 

 Habitat in insulis Nicobaris. 



280 ^ H. Atlantica Morclet et Droiset. 



T. imperforata, depressa, solidiuscula, leviter striatula, 

 nitida, pellucida, fulvo-cornea; spira breviter conoidea; sutura 

 anguste marginata; anfr. fere 6 convexiusculi, regulariter accre- 

 scentes, ultimus rotundatus, non descendens, basi medio ex- 

 cavatus; apertura vix obliqua, rotundato-lunaris; perist. simplex, 

 rectum, marginibus convergentibus, columellari ad insertionem 

 subcalloso, dilatato, adnato. — Diam. maj. 8, min. ^V^, alt. 

 41/2 — 5 mill. (Goll. Nr. 1116.) 



Helix Atlantica Mor. et Drouet in Journ. Gonch. VI. 1857. p. 149. 

 Habitat in insulis Azoris. 



373*. H. clypcas (Nanina) Mousson. •{• 



«T. sinistrorsa, anguste umbilicata, orbiculato-depressa, 

 acute carinata , supra planissiraa , subtus convexa , fragiiis, 

 nitore adipis, supra striata, late rugosa, oblique subundulata, 

 infra obsolete spiraliter lineata, pallide cornea, circum umbili- 

 cum pallidior. Spira , centro vix emergcnte ; sutura plana. 

 Anfr. 5^2 regulariter accrescentes ; ultimus acute carinatus, 

 carina compressa inferne fusco-lineata , ad basin conoideo- 

 convexus, versus umbilicum parvum infundibuliformis. Aper- 

 tura subverticalis trapczoidea, subsecuriformis.. Perist. rectum, 

 peracutum; margine columellari circum umbilicum breviter re- 

 flexo. — 1 diam. 15, 2 diam. 37, 3 diam. 31 mill. — Rat. 

 anfr. 3,7. — Rat. apert. 5:2.» (M.) 



Nanina clypeus Moiiss. in Journ. Conch. VI. 1857. p. 156. 

 Habitat in monte Smiron Javanensi. % 



402*. Helix Mcnadcnsis (Nanina) Mousson. •{• 



« T. orbiculato-convexa , subtus subdepressa , perforata, 

 supra transverse late et leviter costulata, praeterea striatuia 

 et oblique minute rugosiuscula , utrinque decussalim lineolata, 



