HELIX &. 59. 213 
13923. H. acanthinula Crosse. 5 
«T. umbilicata, depressa, subdiscoidea, tenuis, pellucida, 
haud nitida, striis inaequaliter rugulosis, confertis, subobliquis, 
longitudinaliter impressa, sub epidermide nigricante, olivacea, 
unicolor; spira depressa, planata; sutura impressa; anfr. 3!/, 
planati, penultimus obsolete carinatus, ultimus non descendens, 
versus basin planiusculus, carinis 3 munitus, lacinias brevis- 
simas, distantes, spinularum obtusarum more, emittentibus, prima 
earina subsuturali, secunda mediana, tertia basali; apertura ob- 
liqua, angulato - subovata, latiuscula, intus nitidula, olivacea; 
perist. simplex, marginibus convergentibus, parum distantibus, 
columellari fornicatim subdilatato, umbilici mediocris partem 
exiguam obtegente, basali et externo acutis. — Diam. maj. 4/, 
min. 3!5, alt. 2 mill. Apert. 1!/j mill. longa, 2 lata.» (Cr.) 
Helix: acanthinula Crosse in Journ. Conch. XVI. 1868. p. 94. 
[Cen EP 6; 
Habitat Noumea Novae Caledoniae (E. Mariej. 
* 
13924. volutella Gassies. Vid. Nr. 1060. 
1325. labilis Gould. | V.192. — Hyalina labilis Mart., (Microcystis) 
A. Adams in Ann. and Mag. 4th. ser. Ll. p. 46. — Hakodadi, 
ins. Jesso. 
1326. Murphyi Cozx. L V. 192. — Discus Cox Mon. Austr. landsh. 
p. 23. — Australia. 
1327. H. exagitans Cox. T 
«Testa profunde et aperte umbilicata, plano-convexa, su- 
perne plana, subtus convexa, pailide fusco-lutea, facie supera 
irregulariter et subtiliter striata; anfr. 5, rapide accrescentes, 
ultimus acute carinatus, antice non depressus; perist. simplex, 
lenue. — Diam. maj. 0,09, min. 0,06, alt. 0,04 poll.» (C. angl.) 
Helia: eaagitans Coa in Proc. Zool. Soc. 1870. p. 823. 
Habitat in insula Norfolk (Brazier). 
* ^ * 
7B 
1338. EK. Miacgregori Cox. T 
«Testa latissime umbilicata, discoidea, superne perfecte 
plana, subtus ampliter excavata, pallide lutescenti-fusca; anfr. 40 
—44, lentissime accrescentes, ruditer striati, aspectum glome- 
ratum («coiled up») praebentes, similiter ac ZH. polygyrata; 
anfr. ultimus superne carinatus, subtus rotundatus, antice leviter 
dilatatus et valde deflexus; sutura marginata; apertura per- 
obliqua, ovato-rotundata; labrum margine irregulare, leviter 
