322 MR. R. J. L. GUPPY ON BULIMUs ConsTRIcTus. [Apr. 20, 
guish from A. candeana, Orb., found in Cuba and Jamaica, in the 
latter island receiving the name of Melania spinifera Ad. Diplom- 
matina huttoni is presumed to be identical with an Indian species, as 
already noticed. Blandiella reclusa (as well as Hyalina alicea) has 
hitherto only been found in one of the wildest and least-explored 
parts of Trinidad, but may very likely occur in the mountains of 
Venezuela. The genus Blandiella is intermediate between Trunca- 
tella and Geomelania, and is said to be synonymous with Taheitia. 
Cistula aripensis, though quite distinguishable from, is very nearly 
related to Chondropoma tamsianum, which occurs in the hills of 
Venezuela opposite to Trinidad along with Cylindrella trinitaria 
and Helicina barbata. It may be doubted whether the distinction 
between Cistula and Chondropoma is a real difference. Helicina 
nemoralis is allied to H. columbiana of Venezuela; and H. ignicoma 
is very near to H. plicatula, found in Cuba, Guadeloupe, &e. The 
two remaining freshwater bivalves of the list, though not hitherto 
found elsewhere, scarcely call for remark, especially when we take 
into consideration that, as a rule, the freshwater shells of the West 
Indies are of South-American types. 
Thus we have seen that, with the exception of the Diplommatina 
and of Pupa bicolor, the molluscan fauna of Trinidad is almost 
entirely South American, and that very few of the species are of 
Antillean origin. 
From the present list I have excluded Bulimulus fraterculus 
and B. multifasciatus—the shell considered to be the former being 
B. tenuissimus, and the B. multifasciatus of Trinidad being only 
a form of B. vincentinus, and not the true B. multifasciatus of 
Lamarck. 
The distribution of the amphibious Pulmonata and Truncatellide 
is similar to that of the marine mollusca, and has therefore been left 
out of account in the foregoing paper. The following only have 
been found in Trinidad :— 
Melampus coffea, Linn. Siphonaria lineata, Orb. 
pusillus, Gmel. Truncatella pulchella, Pfeiff. 
Pedipes mirabilis, Megerle. 
In conclusion I should acknowledge my obligations to Mr. Ralph 
Tate, F.G.S., for information as to the occurrence in South America 
of several species previously only known from Trinidad. 
2. Note on a Variety of Bulimus constrictus found in Vene- 
zuelan Guiana. By R. J. Lecumere Gurry, F.LS., 
F.G.S., &e. 
[Received March 30, 1875.] 
This variety may be described as follows :— 
BUuLIMUS CONSTRICTUS, var. TATEANUS. 
Shell oblong-conic, rather thin, minutely cancellate, white under — 
