REPTILES. 13 



elongated angular transverse line, bent forwards in the middle and extending to the outer edge of the hinder part of the internal 

 nostril. (Gray.) 



Petaluma, California. E. Samuels. 



ANAIDES LUGUBRI3, B a i r d . 

 PLATE XXX, FIG. 4. 



Silamandra luyubris, HALLOWELL, Pr. A. N Sc. IV, 1848, 26. 



Anaidcs lugubris, BAIRD, Iconographie Encyclopedia, II, 1849, 256. GIRARD, Herp. U. S. Ex. Ex. 1858,8; pi. i 

 figs. 2633. 



Columbia river. Dr. Newberry. 



SIREDON GRACILIS, Baird. 

 PLATE XLIV, FIG. 2. 



SPEC. CHAR. Body slender; head short; branchial arches almost vertical, their pectination coarse and distant. General 

 color reddish brown, marmorated and blotched, (almost vermiculated,) obscurely with blackish; quite distinctly so on the 

 belly. Length 6 inches. Head and body about 3. 



This species differs from S. lichenoides l in the variegation of reddish brown and dark brown 

 in nearly equal proportions. The body is more slender ; the branchial arches more perpendicular 

 to the axis of the body. The feet are quite well developed. The form is much more slender 

 than in S. mexicanus, the limbs stouter, the color quite different. 



4080. Cascade mountains, near latitude 40. Dr. Newberry. 



1 A full grown specimen of 3. lichenoides, from the Rocky mountains, is figured on the same plate for comparison. 



