1875.] REV. 0. P. CAMBRIDGE ON NEW SPECIES OF ERIGONE. 323 
a reddish brown, densely pubescent epidermis disposed in numerous 
fine spiral lines crossed by striz of growth. Whorls -6, convex, 
gradually increasing, the last. forming more than one half, the first 
two usually bare of epidermis and ornamented with a rugosely 
costellate sculpture. Suture rather deep. Aperture oval. Outer 
lip white, a little thickened and everted. Columella thickened and 
broadly reflected over the very deep umbilical perforation. Length 
17, breadth 8, height of aperture 6 millimetres. 
Venezuelan Guiana (2. Tate). 
This variety is rather smaller than the type, and is apparently 
more densely pubescent ; but the latter character may be partly due 
to the state of preservation of the shells. It would appear also that 
the cancellation and more particularly the sculpture of the apex are 
more strongly marked than in the type. 
The nearest known relative of B. constrictus is; I believe, a shell 
described by me as Bulimulus pilosus (Amer. Journ. Conch. 1870, 
p. 310). That shell is of a lighter colour, is rather smaller, and has 
a less-dense pubescence. When estivating, B. constrictus forms a 
white calcareous epiphragm, which does not happen with B. pilosus. 
The shape of both species is almost exactly that of B. oblongus in 
miniature. They seem to find their nearest allies in St. Helena, 
having points of resemblance to B. digitalis and B. helena of that 
island. The character of the apex is very peculiar; and I am in- 
formed by Mr. T. Bland that he has detected a somewhat similar 
feature in other Bulimi from the central portions of the American 
continent. The apex of B. pilosus is costellate; in B. constrictus 
it is often, though not always, somewhat rugose: these differences 
seem to be principally due to the more or less eroded state of that 
part. It was on account of the very considerable differences between 
these shells and those ranked as Bulimulus that I formerly referred 
them to Buliminus; but it is possible that they belong to neither of 
those genera, but form a separate group under the genus Bulimus 
(as restricted in Albers, ‘ Die Heliceen,’ 2nd ed.). That group may 
retain the name of Rhinus (Albers, p. 223), but should perhaps be 
removed from Bulimulus, and placed, along with Pachnodus (op. cit. 
p- 230), or at least a part of that section, under Bulimus, adding to 
the definition of Rhinus, after ‘“‘ anfr. 6-7,’ the words “ apice cos- 
tellata vel rugoso-costellata.”’ 
3. On some new Species of Erigone. 
By the Rev. O. P. Camprincr.—Part IT. 
[Received March 31, 1875.] 
(Plate XLIV.) 
The following pages comprise descriptions of nine species of Eri- 
gone additional to those described in a former paper (p. 190, supra), 
and all received from various localities in France. While, however, 
those described in the former paper were, with two exceptions, of 
PA) as 
