THE NAUTILUS. 95 
and in one in Conn., and after searching in vain for several years 
and having given up all hopes of finding it in R. L., I unexpectedly 
discovered a locality in the summer of 1871. In hunting for other 
species of shells in Cunliff’s Pond at Elmville, in Cranston, I saw 
a few single valves of this species lying near the shore; knowing 
that if dead shells were on the bank, live ones must be in the pond, 
I went in, and succeeded in finding several splendid specimens of 
this rare and unique species. 
GENERAL NOTES. 
New AMERICAN SHELLS. The following species are described 
in a paper read before the Philadelphia Academy. Pupa Sterkiana, 
a cylindrical species, the shape of P. muscorum, but nearly as large 
as armifera, the mouth without teeth, surface strongly rib-striate, 
from Lower California. Zonites selenitoides, a Californian species, a 
little larger than Z. minusculus, ribbed like Selenites duranti. Helix 
Streatori, from Caymon Id., south of Cuba, allied to H. gaussoini 
Tryon, but more depressed, banded with chestnut color, and with 
more conical spire.—Pilsbry. 
Pa@cILOZONITES CIRCUMFIRMATUS Var. CORNEuS. This is different 
from the typical form in lacking color-markings. Shell thin, fragile, 
horn-colored. The specimens were given me by the ABBE VATHE- 
LET, who collected them in Bermuda.—Pilsbry. 
Pura wantep. The editor wishes to obtain specimens of Pupa 
decora Gld. for comparison with Western shells. A liberal exchan ge 
will be given.—Pilsbry. 
LIMAX AGRESTIS IN PHILADELPHIA. I have just examined a 
series of 21 examples of this species collected in Philadelphia, Pa., 
and kindly sent to me by Mr. H. A. Pilsbry. So far as one can 
judge from alcoholic specimens, five color-varieties are represented. 
Two specimens appear white, and may be referred to var. albidus, 
Picard. Six are pale ochery, and spotless, and are referable to 
typicus Less. and Poll., but approach rufescens in their color. Six 
have very indistinct brownish marbling or reticulation, and may be 
classed under Moquin’s var. obscurus. Five are var. sy/vaticus Mogq. 
(now Drap.), and two are to be regarded as V. reticulatus, although 
differing slightly from the description of that variety. One specimen 
