70 THE NAUTILUS. 



NOTES ON WEST AMERICAN CHITONS, II. By S. Stillman 

 Berry. Proc. Cal. Acad. Sci. (4), IX, 1919. In this well 

 considered and full}'- illustrated paper the following new forms 

 are described. 



Leptochiton ( Xiphiozona) heathi, off Monterey. 



Hanleya spicata, Monterey Bay. 



Mopalia phorminx, Monterey Bay. 



Mopalia egretta, Forrester Island, Alaska. 



Ischnochiton (Lepidozona*) asthenes, White's Point, Los Angeles 

 Co., Cal. 



Various points of classification are considered, and Rhombo- 

 chiton, a ' ' new group to rank near or under Lepidozona, with 

 L. regularis (Carpenter) as type" is proposed. H. A. P. 



NOTES. 



SHELLS FROM THE CHIRICAHUA MOUNTAINS, ARIZONA. Dr. 

 Witmer Stone camped in Pinery canyon, on the western slope 

 of the Chiricahua Range, from June to August of this year, 

 studying the distribution of the fauna and flora. Near the top, 

 in the forks of the head of the north branch of Pinery canyon, 

 at approximately 6500 to 7000 ft., he obtained the following 

 snails. The locality is near the high ridge separating Pinery 

 from White Tail canyon, where Ferriss and the writer collected 

 in 1906 (Proc. A. N. S., Phila., 1910, p. 75, fig. 6). The 

 rock is limestone. 



Sonorella virilis leucura P. & F. 



Oreohelix chiricahuana obsoleta P. & F. 



Ashmunella duplicidens Pils. 



Holospira cionella intermedia P. & F. 



Polita indentata umbilicata (Ckll.). 



Gastrocopta ashmuni (St.). 



Gastrocopta dalliana (St.). 



Gastrocopta pilsbryana (St.). 



The last three were found in debris, but some living speci- 

 mens of all the others were taken. H. A. PILSBRY. 



