146 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



the first finger and toe are almost rudimentary. The third finger is de- 

 cidedly longer than the second. 



The dorsal surface of this species is traversed by a broad brownish- 

 red stripe, extending from the nape to the end of the tail, the sides 

 regular and nearly parallel, though more separated towards the uiiddle 

 of the back, where it is as wide as the interorbital space. The stripe is 

 sparsely dotted with dusky spots throughout its extent. The sides are 

 abruptly blackish brown on each side the dorsal stripe; at first con- 

 tinnons, but becoming more and more interrupted by mottliug. The 

 belly is light brownish-yellow, thickly mottled with dark brown in 

 about equal proportions ; lightest under the chin. There is a dusky line 

 from the eye to the point of the muzzle. 



4 3 5 6 7 



Fig. 33. Plethodon intermedius. No. 4732. Fort, Tojon Cal.; \. 



The general proportions and structure of this species are more those 

 of P. glutinosus than of P. cinereus, although slenderer of body. In 

 both there are about fourteen costal grooves. The outer digit in P. in- 

 termedius is nearly rudimentary, instead of prominent, as in the other 

 species. 



A distinguishing feature, when comimred with P. cinereus, is found 

 in the fourteen instead of eighteen costal grooves, the fore and hind 

 limbs being thus less widely separated proportionally. The legs are 

 stouter and the digits much less webbed (scarcely at all in fact). The 

 third and fourth toes especially are much longer. 



Independently of the structural peculiarities I find nothing in the 

 color to distinguish this species from P. cinereus erythronotm. 



Measurements, in inches. 



ength, measured aloug axis 



of 





Body : ' 





body : 









Circumference of belly 



.80 



From suout to gape 







.14 





Distance between armpit and 





From siiont to gular fold . . . 





.45 



Ta 



''roin . .... 



l.:i5 



From suout to armpit 



... 



il: 





From suout to groiu 





1..0 





Height of tail where highest. . 



17 



From snout to behind auus. 



... 



2.15 





Breadth of tail where highest.. 



l(i 



From suout to end of tail.. 



. . - 



3. 65 



Li 



;ibs : 





Tail 



ead: 





1.50 





Free portion of longest iiiiger . . 

 From elbow to tip of longest 



.07 



Width of head 





.25 

 . 15 







.31 



Width of tongue 





Free portion of longest toe 



From knee to tip of longest toe. 

 Distance between oittstretched 



.11 



Length of tongue 





.24 





.37 



Length of orbit 



... 



.09 







Distance between eyes anteri- 







•toes 



1.10 



orly 



.. 



.15 









