6i)6 



THE AMERICAN NATURALIST [Vol.XLVI 



localities in southern California. Through the kindness 

 of the director, Professor J. G-rinnell, the writer has been 

 extended the privilege of examining these specimens and 

 the results are incorporated in the present article. 

 Specimens from the following localities have been 

 studied, all of which are in the Museum of Vertebrate 

 Zoology unless otherwise stated. 



i Mt., near Escondido, Cal 



3,750 ft. , 

 2,750 ft. 



1,500 ft. 



i Madre, Los Angeles Co., Ca 



I Arroyo Seco Canyon near Pasadena, Cal. 



Tejunga Valley, Los Angeles Co., Cal. 



(Stanford University coll.) Upper Sai 

 Alli! i '••'::.v,. :! . - A..LM-I,-. (',,., Col 



In California, Hyla arenicolor is now known to range 

 northward along the coast mountains from near the Mex- 

 ican boundary to the Tejunga Valley, Los Angeles 

 County. In San Diego County it occurs on both the coast 

 and desert slopes of the mountains ; in Riverside County, 

 on the desert slope, and in Los Angeles County, so far 

 as known, only on the coast slope. No records of its 



