17. SPELERPES. 63 



Bolitoglossa rubra, Dum. 8f Bibr. p. 8U, pi. 93. f. 2. 

 Pseudotriton flavissimus, Hallow. Proc. Ac. Philad. 1856, p. 130. 

 Spelerpes ruber, Cope, Proc. Ac. Philad. 1869, p. 107 ; Strauch, Salam. 

 p. 83. 



Larva : 



Siren operculata, Pal. de Beauv. Amer. Phil. Tram. iv. p. 279, pi. — . 



f. 3. 

 Proteus neocsesareanus, Green, I. c. p. 358. 



Series of palatine teeth extending outwards beyond choanae, con- 

 fluent with parasphenoid patches ; latter well separated, diverging 

 posteriorly. Head small, longer than broad, greatest width at angles 

 of jaws ; snout short, rounded, without canthus rostralis j eyes small. 

 Body thick, cylindrical, elongate, measuring thrice and a half to four 

 and a half times the distance from tip of snout to gular fold. Limbs 

 short ; fingers and toes very short, obtuse, free ; no carpal or tarsal 

 tubercles. Tail shorter than head and body, cylindrical at the base, 

 strongly compressed and keeled at the end. Skin smooth, shining ; 

 no parotoids ; a strong gular fold ; fifteen or sixteen costal grooves. 

 Vermilion-red, the back sometimes brown, closely spotted with 

 dark brown ; the spots absent or reduced to dots on the lower 

 surfaces. * o # 



Total length 120 166 millim. 



From snout to cloaca .... 69 90 „ 



Head 14 17 „ 



Width of head 11 14 „ 



Fore limb 12| 16 „ 



Hind limb 16 21 „ 



Tail 51 76 „ 



United States — Eastern and Austro-riparian districts. 



a, b, c-e. $ , 2 , & New York. 



larvae. 



f-ff, h-l. <3 , 5 , & Near Philadelphia. 



larvae. 



m. Skeleton. Philadelphia. 



n. (S • Pennsylvania. 



o. Hgr. S. Carolina. Prof. Verauxen [P.]. 



p-s. $. N.America. Dr. J. Green [P.]. 



t, u. 2 • N. America. 



v-tv, x-z. J & larvae. N.America. Prof. St. George Mivart [P. 1. 



a-/3. c? & larva. Mexico (?). 



Var. montanus. 



Pseudotriton montanus, Baird, Journ. Ac. Philad. (2) i. p. 293. 



Head more elongate, occiput more convex ; tail longer ; seventeen 

 costal grooves. 



Alleghany Mountains, from Pennsylvania to South Carolina. 



Mr. Cope (I. c.) distinguishes another variety, S. sticticeps (Baird, 

 MS.), from South Carolina, but does not characterize it. 



