UNIVERSITY OF CALIFORNIA PUBLICATIONS 

 ZOOLOGY 



Vol. 1, No. 4, pp. 157-170, PI. 16. November 5, 1903 



CORRELATED PROTECTIVE DEVICES IN 

 SOME CALIFORNIA SALAMANDERS 



BY 



MARIAN E. HUBBAKD 



The observations recorded in these notes were carried on in 

 the laboratory of Zoology at the University of California. I am 

 especially indebted to Professor Bitter for his kind and suggestive 

 direction of the work. I wish also to express my thanks to 

 Professor Charles A. Kofoid, to Dr. Harry B. Torrey and to Mr. 

 Calvin Esterly of the Department of Zoology of the University, 

 for kindly assistance; also, to Mr. Leverett Mills Looinis, Director 

 of the Museum of the California Academy of Sciences, to Dr. 

 John Van Denburgh, Curator of Herpetology, and to Miss Forbes, 

 Assistant Librarian of the same institution, for the use of speci- 

 mens and the library of the Academy. I am furthermore 

 indebted to Dr. Lorenzo Yates, President of the Society of 

 Natural History in Santa Barbara, for the use of specimens in 

 the collection of that society. 



Much has been written on the various skin glands of the 

 Batrachia. Leydig, Engelmann, Wiedersheim, Zalesky, Schulz, 

 Heidenhain, Eberth, Nicoglu, Capparelli and many others,* 

 are among the investigators who have devoted more or less 

 attention to the problems in this field, and Hoffmann, Nieoglu, 

 Fatis, Wiedersheim and Boulenger in particular have given us 

 valuable reviews of the literature and irsiimrs of our knowledge. 



•See bibliography at end of this paper for a somewhat more extended list of 

 these investigators. 



