430 Mr. R. J. L. Guppy on the Terrestrial 
parts of the island afford a congenial habitat to the land-snails. 
An ascent of Mount Kuliabon, 3000 feet high, furnished me 
with examples of the four Helzces already mentioned, Hyalina 
Baudoni, Amphibulima pardalina, Cyclotus amethystinus, and 
Glandina perlucens. On Morne Diablotin, at the north end 
of the island, I found Hyalina Baudonz, the four Helices 
Helicina rhodostoma, H. conuloides, H. plicatula, H. velutina, 
Amphibulima pardalina, Cyclotus amethystinus, and Glandina 
perlucens. On the very summit of this mountain, stated to be 
5314 feet high, I collected Helix badia, H. Josephine, and 
Helicina conuloides. Amphibulima pardalina is another spe- 
cies fond of the thickly wooded heights; but several of the 
Mollusca (e.g. Helicina rhodostoma and Cyclotus amethystinus) 
appeared to cease at about 3300 feet. 
The general aspect of the molluscan fauna of Dominica is 
precisely what we might have expected from its position be- 
tween the islands of Guadelupe and Martinique, the land- 
shells of which are well known. Of the total of twenty spe- 
cies determined by me, eleven are found in the neighbouring 
islands, whilst I have considered nine to be undescribed. 
1. Glandina perlucens, n. sp. 
Testa subulato-turrita, levis, diaphana, fusco-flavida, vix striatula, 
lineis distantibus ornata; apex obtusissimus ; anfractus 7, parum 
convexi, lente accrescentes, ultimus applanatus, spire longitudi- 
nem circiter equans ; sutura valde impressa ; columella valde torta, 
truncata; peristoma simplex, margine externo aliquanto pro- 
minente. 
Long. 16 millim., lat. maj. 4 millim. ; apert. alt. 4, lat. 2. 
A subulate-turrite, smooth, brilliantly polished, yellowish- 
red shell, marked by obscure strie and by distant variciform 
lines, of which there are from three to six on a whorl; with 
a very obtuse apex and seven slowly increasing, scarcely con- 
vex whorls, the last somewhat: flattened and equal to about 
half the length of the shell; columella strongly curved, trun- 
cate; aperture oval, elongate; peristome simple, its external 
margin somewhat prominent. 
A species allied to G. arcuata, Pf., of Jamaica. Of three 
examples I obtained, one only was of full growth. 
2. Stenogyra octona, Chemn. 
3. Hyalina Baudoni, Petit. 
I was rather in doubt whether to refer the Dominican shell 
to this species or to H/. concolor, Fér. It appears to be rather 
intermediate between those two very closely allied forms. Its 
whorls are more like those of H. concolor in contour, except in 
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