HELIX 8. gu. 129 
541. H. dura Pfr. 
T. perforata, depressa, solida, carinata, superne subcon- 
ferte plicato-striata, nitidula, fusco-isabellina; spira brevissime 
conoidea, verüice minuto obtusulo; sutura linearis, anguste 
marginata; anfr. 5!4 vix convexiusculi, lente accrescentes, ul- 
timus non descendens, peripheria compresse et acute cari- 
natus, subtus modice convexus, leviter radiato-striatus; aper- 
tura obliqua, depresse subrhombeo lunaris; perist. rectum, 
margine supero tenui, basali a carina subito recedente, quasi 
rostram formante, tum usque ad perforationem leviter incras- 
sato. — Diam. maj. 34, min. 30, alt. 14 mill. (Mus. Cuming). 
Helio dura Pfr. in Proc. Zool. Soc. 1863. p. 524. 
Hemiplecta dura Wallace in Proc. Zool Soc. 1865. p. 406. 
Waigiou. (?) 
Habitat «Lao Mountains» Cambojae (Mouhot). 
Obs, Affinis H. exili Müll, a qua praeter staturam praecipue angulo 
peristomatis quasi deorsum rostrato differt. 
548. H. inclinata Pfr. 
T. subelause perforata, conoideo-depressa, solida, carinata, 
superne conferte rugoso-striata, nitidula, pallide fusca; spira 
regulariter conoidea, vertice minuto obtusulo; sutura marginata, 
carina subprominula; anfr. 6 vix convexiusculi, lente accrescen- 
tes, ultimus non descendens, acute carinatus, basi convexus, 
substriatus, nitidior, medio pallidior, impressus; apertura fere 
diagonalis, angulato-lunaris, intus margaritacea; perist. rectum, 
margine supero simplice, basali regulariter arcuato, versus per- 
forationem subincrassato, eam lamina triangulari claudente. — 
Diam. maj. 30, min. 261/, alt. 14 mill. (Coll. Angas.) 
Helix inclinata Pfr. in Proc. Zool. Soc. 1863. p. 526. 
Habitat in insulis Louisiadis Novae Caledoniae. 
* 
549. (38$. exilis Müll. —  H. explanata Quoy. —  Nanina exilis 
(Hemiplecta) A?. 53. — Nova Guinea. (I. 78.) 
550. (389.) divisa Forb. Nanina, divisa (Hemiplecta) A?. 53. — 
Ins. Louisiad. (III. 77.) 
5DDl. (390. mera EHeeve. | — Habitat? (IV. 65.) 
5592. (391. Moretonensis Pfr. — Australia. (IV. 65.) 
553. (3923. Novae Hiberniae Quoy. (Col. Nr. 248.) Nanina No- 
vae Hiberniae (Hemiplecta) A?. 52. — Nova Hibernia, ins. Ad- 
miralitatis. (I. 79.) 
554. (393. semicerina Mor. | — ins. Mauritii. (III. 79.) 
505. (394) excentrica Pfr. (Coll. Nr. 219.) Nanina ezcentrica (Oro- 
bia) A?. 58. — Ins. Philippin. (l. 82.) 
v. | 9 
