8 BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



choana?, parallel with the maxillary and j)remaxillary series; whole 

 body strongly depressed except terminal two-thirds of tail w^iich is 

 strongly compressed; head broad, fiat; nostrils anterior, near the 

 tip of the snout and the ni)s, their distance from each other less than 

 one-half the distance between the ejes, which are without eyelids and 

 very small, their diameter being less than one-tenth of the distance 

 between them; legs short, depressed; fore legs with four lingers 

 slightly webbed at base, the outer one wdth an outer dermal fold which 

 continues along tlie entire length of the arm; hind feet with five toes 

 w^ebbed at base, the two outer ones with a distinct dermal flap on the 

 outer side; a broad cutaneous expansion on the posterior aspect of 

 the leg; tail short, slightly more than one-third the length of head 

 and body, compressed, with a high dorsal fin beginning at the inser- 

 tion of the hind legs, and a much lower ventral fin; a strong lateral 

 fold on the neck from behind the angle of mouth to above the shoulder; 

 another prominent undulating lateral dermal fold from the axilla to 

 above the hind legs; skin rough, with numerous grooves, transverse 

 on underside of body and on the sides, longitudinal on the throat; 

 head above covered with closely set round tubercles which are some- 

 what smaller than the eyes, but not arranged with any degree of 

 regularity or symmetry; lips, tips of snout, and a limited area along 

 the median line of the top of head comparatively smooth; similar 

 tubercles, though more scattered on sides of throat and on upper side 

 of neck, a few occurring irregularly along the entire side of the body 

 above the lateral fold. Color (in alcohol) burnt umber in various 

 shades, paler below, irregularly blotched and marbled with dusky 

 spots, limbs similarly spotted, ti|)s of digits light orange brown. 



JHDieyisio)^. 



mm. 



Total length 490 



Tip of snout to vent 322 



Anterior border of vent to tip of tail 168 



Width of head 69 



Distance between eyes 40 



Fore legs 52 



Hind legs 59 



Greatest height of tail 48 



Few^ salamanders have been oftener described in detail, or oftener 

 figured than the present species as will be seen from the synonymy 

 given above, where ample references are cited. A more detailed 

 description therefore seems superfluous. It may be added, however, 

 that there is no apparent external difference between the sexes, except 

 that during the breeding season the borders of the vent are swollen 

 in the male, but flat in the female. The young ones differ chiefly in 

 being less rough and lighter in color. 



