344 HELICES ADDENDAE. 



207^. H. Massoni Bchn. 



T. perlorata, turbinato-lonlicularis, carinata, solidula, leviter 

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

 spira conoidea , oi)tusula; sutura niarginata: anfr. 5 convexius- 

 culi, 2 ultimi supra carinam impressi, ultimus non descendens, 

 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. S mill. (Mus. Cuming.) 



Helix Massoni Behn in sched. 

 Habitat in insulis Nicobaris. 



280 '\ H. Atlantica Morclct ct Drouct. 



T. imperforata , depressa , solidiuscula , leviter strialula, 

 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-Iunaris; perist. simplex, 

 rectum, marginibus convergentibus, columellari ad insertionem 

 subcalloso, dilatato, adnato. — Diam. maj. 8. min. 7^2, alt. 

 41/2 — 5 mill. (Coll. Nr. 1M6.) 



Ilelix Atlaniica Mor. et Dronet in Journ. Gonch. VI. 1857. p. 149. 

 Habitat in insulis Azoris. 



373 ^ H. clypcus (Nanlna) Mousson. ^ 



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

 acute carinata , supra planissima , subtus convexa , fragilis, 

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

 infra obsolete spiraliler lineata, pallide cornea, circum umbili- 

 cum pallidior. Spira . centro vix emergente ; sutura plana. 

 Anfr.. 51/2 regulariter accrescentes ; ultimus acute carinatus, 

 carina compressa inferne fusco-lineata , ad basin conoideo- 

 convexus, versus umbilicum parvum infundibuliformis. Aper- 

 tura subverticalis trapezoidea, 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 chjpeus Mouss. in Journ. Conch. VI. 1857. p. 156. 

 Habitat in monte Smiron Javanensi. 



402^ Hclix Mcnadcnsis (Nanina} Mousson. •{• 



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

 supra transverse late et leviter costulala , praeterea striatula 

 et oblique minute rugosiuscula, utrinque decussatim lineolata, 



