318 PROCEEDINGS OF THE ACADEMY OF [1899. 



phalanges composing the digits from i to v is respectively 1, 2, 3, 3 

 and 2. Like those of the hand, the pedal digits bear dark-colored 

 horny tips. Distinct tubercles are absent, but gi'ooves corre- 

 sponding to those of the manus are present. 



The form of the head is very cliaracteristic, the snout being more 

 flattened than in any of our smaller salamanders; its middle part 

 has no evident curvature whatever. Outside of a line joining the 

 anterior angle of the eye to the corresponding nostril it slopes 

 gently downward, causing a faintly marked canthus rostralis, but 

 the profile continues straight to a point between the nostrils, ante- 

 rior to which it bends sharply downward into the alveolar margin 

 of the jaw. The outline of the snout is a smooth regular curve 

 with a just suggested angle below the nostrils; anteriorly it projects 

 slightly beyond the lower jaw. The nostrils are smaU but, being 

 surrounded by a raised fold and connected with the margin of the 

 jaw by a groove, are conspicuous. They are separated by a dis- 

 tance about equal to the cleft of the eye. 



The cleft of the mouth is slightly sinuous, and above its angle is a 

 rounded elevation bounded behind by a well-marked vertical groove 

 and above by a branch of this groove which is directed toward the 

 eye. There is no conspicuously swollen parotid region and the 

 posterior part of the head is smoothly rounded. The low but well- 

 marked gular fold is, in this example, perfectly straight and is almost 

 continuous on the sides of the neck with a faint dorsal groove. 



One of the most striking features of the species, though not 

 diagnostic among its allies, is the prominence of the rather large 

 eyes, which in the Hving animal are very conspicuous. This results 

 not so much from their size as from the flatness of the snout which 

 forces them to stand out above its surface. Both the anterior and 

 posterior angles present small tubercles, Avhile behind the posterior 

 is a distinct vertical curved fold — a spur from the lower eyelid, 

 which is much broader behind. The upper eyelid about equals the 

 interorbital space in width. 



The vent is a narrow longitudinal slit about as long as the diam- 

 eter of the thigh and situated in the base of the tail. Its margins 

 are smooth and unmodified. The surface of the skin is generally 

 smooth, but on the snout is slightly pitted and papillate. 



Three series of dermal sense organs are present on the trunk, the 

 middle one being best developed and most complete. It begins 



