THE BATRACHIA OF NORTH AMERICA. 



97 



to the A. macrodactylum. The width of the head, says Peters, enters 

 the length to the groin 4§ times. The dorsal band is ochraceous, while 

 in t.ypical A. macrodactylum it is glaucoas or mauve color. 



Amblystoma macrodactylum Baird. 

 RESERVE SERIES. 



Catalogue 



No. of 



iiiiiiibor. 



spec. 



4054 



2 



4012 



1 



5982 



6 



6878 



3 



8863 



2 



12591 



2 



31468 



I 



5248 



1 



12587 



2 



10922 



4 



11591 



6 



14460 



2 







6 



14524 



1 



4711 



1 



4035 



2 



Looality. 



Puget Sound, Oregon 



Astoria, Oregon 



Chilowyuck Lake, 

 Oreg.' 



Fort Klamath, Oregon. 

 Garrison Creek, Wash . 

 Fort Walla Walla, 



Wash. 



do 



Oregon 



Fort Walla AValla, 



Wash. 



do 



do 



Fort Klamath. Oiogou 

 Fort Custer, Mont .. 



Seiuiahmoo, Wash 



Washington Torritory 



When col- 

 lected. 



Oct. 2, 1876 

 June— " 1881 



, 18S1 



, 1881 



■— , 1881 

 • — , 1881 



From whom received. 



Nature of speci- 

 men. 



Dr. Goo. Suckley, U. S. 



A.N. S., Phila 



Dr. C. B. R. Kennerly.. 



Wjllis Wittich 



Capt. Chas. Bendire , 

 do 



Lieutenant Mullen.. 

 Capt. Chaa. Bendire. 

 do 



.do. 

 .do 



H. McElderry, M. D 

 Capt. Chas. IJendiro. 



A. Campbell 



Dr. J, G. Cooper 



Alcoholic. 

 Do. 

 Do. 



Do. 

 Do. 

 Do. 

 Do. 



Do. 

 Do. 

 Do. 



Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Alcoholic larva. 



AMBLYSTOMA EPIXANTHUM Cope.* 



Proceed. Acad. Pliilad., 1883, p. 16. 



Nearly related to Amblystoma macrodactylum Baird, and to be placed 

 next to that species in any synopsis of the genus. Costal folds twelve. 

 No canthus rostralis. Upper jaw overlapping lower. Tail strongly 

 compressed, as long as head and body to groin. Head wide-oval ; its 

 greatest width one fourth in total length to the groin. Digits all rather 

 short; four phalanges in fourth posterior digit. Internal iiares as 

 widely separated as the external. Eye-fissure one-half width between 

 the anterior canthus. Median dental series presenting au angle for- 

 wards. Tongue large, deeply plicate. Length, m. .083 ; length to ax- 

 illa, .017; to groin, .040; length of anterior limb, .012; of anterior 

 foot, .004; of hind limb, .014; of posterior foot, .0065. 



Sides of body and tail and superior surfaces of limbs, shining black. 

 Dorsal region to end of tail and muzzle, gamboge-yellow. The yellow 

 expands on the head and forms two cross-bands on the upper surfaces 

 of each of the limbs. The black of the sides is occasionally inter- 

 rupted by the yellow spots irregularly placed. Below, dilute black, 

 dusted with minute white speckles. 



The structural differences between this and the A. macrodactylum are 

 not many, but are well marked. They are: (1) The greater width of 

 the head, which enters the length (without the tail) five tiuies in the 

 latter, and four times in the A. epixantlium] and is also seen in the 

 greater interorbital width; (2) in the short toes, whicb are very much 

 longer in the A. macrodactylum. In color this species is the more bril- 



1951 Bull. 34- 



* Plate 25, fi^. 8. 



