1881.] LIZARDS FROM ECUADOR. 231 



but narrower. Sides of the neck and shoulder gianular. Ventral 

 shields smooth, in eight longitudinal series, long, narrow, and dis- 

 tinctly rounded posteriorly. Four principal praeanal shields — two 

 median, with their points touching, and two lateral. Tail continu- 

 ing the scutellation of the back and central surface, with a distinct 

 groove along the side. Second and fifth toes on fore foot nearly 

 equal ; fourth a little longer than tlie third. 



Brown, variegated with black on the head, with close longitudinal 

 series of light black-edged ocelli or of light spots, in a black longi- 

 tudinal stripe on the back and sides of the body. Labials and chin- 

 shields spotted with black. Tail pale yellowish brown. Entire 

 undersurface yellowish. 



niillim. 



Total length 114 



Distance from tip of snout to ear-opening. . 10 

 „ „ ■ „ fore limb . . 18 



» „ „ vent 43 



Length of fore limb 11 



„ fourth front toe 3 



„ hind limb 18 



„ third hind toe 4 



„ fourth hind toe 6 



This species has the dorsal scutellation characteristic of the sub- 

 genus Pantodactylus ; but, as before remarked, the dorsal scales are 

 still narrower than in Cercosaura schreibersii, and more like those 

 of C. argulus, Peters, figured in 'Abh. Ak. Berl.' 1863, pi. i. fig. 3. 

 The narrow rounded ventral scales are a peculiar feature ; and so also 

 is the arrangement of the parietal head-shields, which is like that of 

 the genus Leposoma. 



One specimen from Canelos. 



Cercosaura, subg. n. Prionodactylus. 



Characters of Cercosaura and of the section Pantodactylus. Toes 

 of both fore and hind feet strongly toothed beneath. 



5. Cercosaura (Prionodactylus) manicata, subg. et sp. nu. 

 (Plate XXII. fig. 3.) 



A single broad internasal, two fronto- nasals in contact, the rest of 

 the plates on the upper surface of the head as in C. schreibersii, 

 the interparietal being somewhat shorter. A single frenal, a large 

 triangular praeocular over the labials, and another similar cauthal 

 plate before the supraorbitals. Six supralabials, the third, fourth, 

 and sixth elongate, continued in a series of longish smooth plates in 

 the same line as far as the ear-ojiening ; only four infralabials, the 

 third extremely elongate. A single broad mental plate behind the 

 symphysial, followed by two pairs of contiguous posterior plates, a 

 third pair being widely separated and forced mto a lateral position 

 by two converging groups of laige oval gular scales, the central and 

 lateral gular spaces being occupied by smaller rounded scales ; a 



