No. 9. — The Collection of Amphibia Caudata of the Museum of 

 Comparative Zoology. 



By Emmett R. Dunn. 



This paper records some of the results of a recent study of the 

 M. C. Z. collection of tailed amphibians. The localities, Museum 

 catalogue number, and the number of specimens (in parentheses) 

 are given under each form. The enumeration is complete to October, 

 1918. The collection contains 86 species or subspecies and 2,703 

 specimens. The records enclosed in square brackets have been 

 supplied by Dr. Thomas Barbour. 



XECTURroAE. 



1. Xecturus maculosus (Rafinesque). 



Loc. ? 1,820; 4,709.— Lake Champlain, 276 (2); 1,061 (2); 1,844 (skull).— 

 N. Y.: Cayuga Lake, 1,282; 1,861 (14); 2,010 (17); Ithaca, 1,371 (2); 

 1,713 (2); [Rochester, 313 (3)].— Omo: Sandusky River, 1,849 (4).— 

 Mich.: Antrim Co., Torch Lake, 2,447; 4,708; Northport, 4,271. 



M. C. Z. 2,010 includes a series ranging from 83-320 mm. in length. 

 The smaller ones, as well as 2,447 and 1,820 (53 mm. long) show a 

 most distinct striping, in the form of a median and two lateral dark 

 stripes. These persist in the adult in the dark line through the eye, 

 but elsewhere on the body they disappear and are replaced by num- 

 erous spots. 



2. Xecturus punctatus (Gibbes). 

 S. C: Santee River, 1,553 (cotype). 



This specimen is 150 mm. long. It is slimmer than N. maculosus of 

 equal length, and lacks all trace of stripes, even the black line through 

 the eye. There are no spots. 



I have examined about fifteen specimens of this form, from Wilming- 

 ton, N. C, Ogden and Charleston, S. C, and the Little Pedee and 

 Santee Rivers, S. C. They all agree in being perfectly uniform dark 



