138 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



Plethodon cinereus dorsalis Baird. 



Cope, Proc. Ac. Pliila., 1869, p. 100 (uame only). 



This subspecies lias the size and proportions of body and limbs as in 

 P. erythronotus, but may be readily distinguished by the smaller number 

 of costal furrows, shorter body, and different character of the dorsal 

 stripe. 



There are only sixteen costal furrows between the fore and. hind legs, 

 instead of eighteen, as in P. erythronotus. This indicates a shorter body, 

 and accordingly we find that the distance from snout to armpit is con- 

 tained only three times in that from snout to groin, instead of 3^ or 3^, 

 as in the other. 



I am unable to detect any difference in the mouth, tongue, teeth, or 

 limbs. 



In alcohol there is a broad yellowish-red dorsal stripe, which begins 

 at the nape and extends to the end of the tail. On the back it is on an 

 average as broad as the interorbital space of the bead. The outlines, 

 instead of being parallel or nearly so, are very irregular on the back, 

 exhibiting four or five coarse dentations between shoulders and rump, 

 which in some speciaiens are nearly opposite each other (causing the 

 dorsal stripe to be twice as wide at some places than in others), or more 

 or less alternating. On the tail the outlines are straight, converging 

 slightly to the tip. The sides and beneath are (J^ull brownish-yellow or 

 whitish, finely mottled, or vermiclated with dark reddish-brown, which 

 becomes more crowded to the dorsal stripe, and is sharply relieved 

 against it. 



There is a distinct light liue from the upper eyelid, passing internally 

 to the nostrils and meeting its fellow iu an angle iu the middle of the 

 muzzle, then sending dowu a single line to the edge of the lip. 



Measurements, in inclies. 



Leugtb, measured along axis of body : 



From snout to gape 11 



From snout to gular fold 34 



From snout to armpit 46 



From snout to groin 1. 36 



From snout to beliiud anus 1. 62 



From snout to end of tail 2. 94 



Tail 1.32 



Head : 



Width of bead 20 



Widtb of tongue 12 



Lengtb of tongue 17 



Lengtb of orbit 09 



Distance between eyes anteri-. 

 orly . „ 13 



Head — Continued. 



Distance between outer nostrils . 08 



Body : 



Circumference of belly 60 



Distauce between armx)it and 

 groin 86 



Tail: Heigbt of tail where highest. .10 



Limbs : 



Free portion of longest finger. . . 05 

 From elbow to tip of longest fin- 

 ger -, 23 



Free portion of longest toe 06 



From knee to tip of longest toe . 23 

 Distance between outstretched 

 toes 75 



