THE NAUTILUS. 95 



and iu one in Conn., and after :>enrcliing in vain for several vear.s 

 and having given up all hopes of finding it in R. I., 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 nuist he in the pond, 

 I went in, and succeeded in finding several splendid specimens of 

 this rare and unique species. 



GENERAL NOTES. 



New American Shells. 'Die following species are described 

 in a paper read before the Philadelphia Academy. Piqm Sterklana, 

 a cylindrical species, the shape of P. muscoram, but nearly as large 

 as armifera, the mouth without teeth, surftice stronglv rib-striate, 

 from Lower California. Zonites se/enitoides, aCalifornian species, a 

 little larger than Z. miaiisculus, ri])bed 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 sj)ire. — Pllsbry. 



PcECiLOZONiTES ciRCUMFiRM ATUS 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 Bernuida. — Pilsbry. 



Pupa wanted. The editor wishes to obtain specimens of Pvpa 

 decora Gld. for comparison with Western shells. A liberal exchange 

 will be given. — Pilsbry. 



LiMAX AGRESTis IN PHILADELPHIA. I havc 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 wliite, and may be referred to var. albidns, 

 Picard. Six are pale oehery, and spotless, and are referable to 

 typiois 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. sylvaticiis Moq. 

 (now Drap.), and tAvo are to be regarded as V, reticulahis, although 

 dififeri ng slightly from the description of that variety. One speci njeu 



