60 THE NAUTILUS. 



Total 85 species. The Pisidia will be published by Dr. Sterki, and 

 the results will thus be made known to those interested in these little 

 animals. Olof O. Nylander. 



GENEKAL NOTES. 



We regret to record the death on August lGtli of Dr. W. D. Hart- 

 man, of West Chester, Pa. Further notice will appear next month. 



Pomatia aspersa in CALIFORNIA — I found a fine living speci- 

 men of Pomatia aspersa, Mull., this summer at Pacific Grove, Cali- 

 fornia. A small colony of this European snail was established many 

 years ago at San Jose, more than fifty miles from the spot where this 

 specimen was touixl. The species is apparently becoming naturalized. 

 — Josiah Keep. 



Polygyra BlNNEYANA. — Owing to hasty proof reading, several 

 errors appear in the article on " New Southwestern Forms of Poly- 

 gyra " in the July issue. On page 38, sixth line from top, the word 

 umbilicus should be inserted between divcsta and narrow. On p. 39, 

 second line, for " county " read " country." — H. A. P. 



The British Pliocene Non-Marine Mollusca are revised 

 by Messrs'. A. S. Kennard and B. B. Woodward, in Proc. Mnlac. 

 Soc, Loud. III., pt. 4, March, 1899. "It is in the Red and Nor- 

 wich Crags that the genesis of our present molluscan fauna is to be 

 sought. It is a noteworthy fact that many of our existing species 

 are met with for the first time in these beds, and are not known to 

 have existed on the continent until a much later date. This may 

 result from the imperfection of the geological record, or it may indi- 

 cate that these forms have been derived from a region to the north- 

 ward." Of 38 species discussed, 6 are extinct. <*> species, Corbicula 

 fluminalis, Helix lactea, Hygromia rubiyinosa, II. incarnata, Heli- 

 codohta lens, and Euhtafruticnm are now extinct in England, though 

 living on the continent; C. flumimdis and Eulofa fruticum having 

 existed to the Post-Pliocene. It is interesting to find that Eulota 

 extended in the Pliocene so far »o the westward. Helix lactea and 

 ffelicoddnta lens, each represented by very scanty but apparently 

 authentic material, are now restricted to the circum-Mediterranean 

 fauna. One new species, Paludestrina Rievci, is described from the 

 Norwich Crag. It is allied to the Upper Oligocene and Lower Mio- 

 cene P. obtusa (Sandh.) of Germany. 



