t'HE BATEACHIA OF NORTH AMERICA. 183 



No Species has yet been found east of the Pacific coast region, 



a. Distal half of tail ronuded or oval. 



Large, stout; thumb developed; fiugers short; paraspheuoid scries uarrow, vom- 

 eriues strongly curved backwards; width of head 4-5 to groiu ; light brown 

 above, with yellow spots j. luguhris. 



Smaller, sleuder; thumb not distinct, fingers long, slender ; paraspheuoid series 

 wider; vomerine series scarcely recurved ; width of head 6.33 times in length 



to groin; above black, sides gray A. ferreus- 



aa. Distal half of tail strongly compressed. 



Robust; muzzle wide; paraspheuoid tooth patch wid<^.; digits short, the inner 

 not free; width of head 5-5 times in length to groin; black, sprinkled 

 with small bluish spots above A. iecanus. 



AUTODAX LUGUBRIS Hallow. 

 (Plate 27, figs. 1-4 ; 35, fig. 3; 48, fig. 15.) 



Anaides luguhris Baird, Iconogr. Encycl., ii, 1849, p. 256; Baird & Girard, Proc. 

 Ac. Phila., 1853, p. 302; Baird, U. S. Expl. Exped., Herp., PI. i, figs. 26-33, and 

 Rept. U. S. Expl. Surv., xiii, p. iv, PL 30, fig. 4; Cope, Proc. Ac. Phila., 1869, 

 p. 109: Strauch, Salam., p. 75; Boulenger, Cat. Batr. Grad. Brit. Mus., ed. II, 

 1682, p. 52. 



Salamanclra Iiigiibris Hallow., Jouru. Ac. Phila., 1848, p. 126. 



Taricha f luguhris Gray, Cat. Batr. Grad. Brit. Mus., ed. i, p. 26. 



Amhlystoma punctatuin Gray, ibid., p. 37. 



The head is elongated, very much depressed, flattened, and when 

 viewed from above is much swollen posteriorly. The snout is very 

 prominent, protruding beyond the lower jaw. The nostrils are ele 

 vated, lateral, subterminal, and far apart. The eyes very prominent; 

 their diameter enters only once in the distance between their anterior 

 rim and the extremity of the snout. The cleft of the mouth is large 

 and undulating. The maxillary teeth are proportionally large, espe- 

 cially on the lower jaw. They are lanceolate in shape, very acute and 

 thin. The palatine teeth are inconspicuous, rather blunt, disposed iu 

 an open V-shaped figure, the summit of which is directed backward, 

 wiiilst its branches extend to the internal and posterior margin of the in- 

 ner nostrils. There are two elongated patches of minute teeth on the 

 [)arasphenoid, closely approximated anteriorly and diverging slightly 

 posteriorly, where they are rounder and broadest. The cordiform or pel- 

 tate; tongue fills the whole space of the inferior floor of the mouth. It 

 is attached along its medial line, whilst its sides are perfectly free, as is 

 also slightly its tapering tip and its posterior bilobed expansion. 



The neck is elongated and slightly contracted; a distinct and well- 

 marked gular fold may beobserved. It no doubt exists during life, 

 though its presence has been contested by some writers. 



The body is subfusiform, diminishing towards both extremities. The 

 sides of the abdomen are transversely folded thirteen times between 

 axilla and groin. The tail is almost as long as the head and body to- 



