1883.] NATURAL SCIENCES OF PHILADELPHIA. IT 



fourth posterior digit. Internal nares as widely separated as 

 the external. Eye-fissure one-half width between the anterior 

 canthus. Median dental series presenting an angle forwards. 

 Tongue large, deeplj^ plicate. Length, m. -083 ; length to axilla, 

 •017; to groin, -040; length of anterior limb, '012; of anterior 

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



Sides of bod}^ 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 surfoces of each of the limbs. The black of the sides 

 is occasionally interrupted by the yellow spots irregularly placed. 

 Below, dilute black, dusted with minute white speckles. The 

 structural differences between this and the A. macrodactylwni 

 are not many, but are well marked. They are : 1. The greater 

 width of the head, which enters the length (without the tail) five 

 times in the latter, and four times in the A. epixanthum ; and 

 is also seen in the greater interorbital width. 2. In the short 

 toes, which are very much longer in the A. macrodactylum. In 

 color, this species is the more brilliant ; the coast species being 

 described as brown, with graj' dorsal stripes, instead of black, 

 with yellow dorsal stripes. In it the limbs are not banded, and 

 the belly is uniformly pale, contrary to what holds in the present 

 species, which is the most handsome of the genus. I obtained 

 four specimens of this salamander, under logs, in a swamp near 

 the head of the South Boise River, on the south side of the 

 Sawtooth Mountain Range, Idaho. 



Bufo columbiensis Bd. and Gird. 



Abundant. I also obtained it at Bellevue on the Wood River, 

 about one hundred miles southeast of Atlanta. 



Bascanium vetustum Bd. and Gird. 

 Eutaenia sirtalis Linn. 



Tiiese 'are all, except the last, species characteristic of the 

 northern fauna of Washington Territory. The Biifo columbiensis 

 ranges to the headwaters of the Missouri. 



8. Mouth of Brtjneau River, Idaho. 



This locality is on Snake River, which cuts through the great 

 lava outflow of southern Idaho and Oregon. The reptiles are 



