CROCODILIAN^, LIZARDS, AND SNAKES. 511 



longitudinal rows; in form twice as long- as wide, thick, with au obtuse 

 keel, roughened in old specimens. Abdominal scales in twelve and 

 fourteen series, smaller than dorsals; lateral fold very weak, including 

 a few granules mixed with larger scales. Extended limbs overlapping 

 the posterior, reaching wrist or palm. Lengths of fingers, beginning 

 with the shortest, 1,5,2,3,4; of toes the same. Four preanal plates, 

 rati)er larger than the abdominals. Scales of superior surface of tail 

 not more strongly keeled than dorsals. 



Above, bright pea green, each transverse series of scales blackish at 

 the base and yellowish at the tips ; rugosities of all scales black. Below, 

 pale green, with a reddish tint in some, gular region and lower jaw 

 yellow, abruptly separated from the green of the neck; eyelids yellow. 



Measurements. — Length of head and body, 105 mm.; length of head, 

 inclusive of postoccijDital plate, 27 mm. ; width of head at temporal 

 region, 23 mm.; length to axilla, 44 mm.; length of fore leg, 32 mm.; 

 length of fore foot, 13 mm.; length of hind leg, 40 mm.; length of hind 

 foot, 19 mm.: total length of smaller specimen, with tail, 215 mm.; 

 length of tail of small specimen, 130 mm. 



This species has been found so far only in the elevated forests of the 

 region about the volcano of Orizaba or Citlaltepetl. Its coloration is 

 handsome, and is calculated to conceal it in forest vegetation. The 

 same style of coloration characterizes the Gerrhonotus auritv^ Cope, 

 which inhabits similar situations on the plateau of Guatemala. While 

 referring to this species I correct an error into which Boulenger has 

 inadveiteutly fallen in describing this species. He distinguishes it 

 from the Barissia Jimbriata Cope, which resembles it in the elongate 

 yellow preauricular processes, by the presence of " three pairs of shields 

 between the frontal and the rostral," while the B. Jimhriata has "four 

 l)airs of shields." Now the 6'. auritus has four i)airs of shields between 

 the frontal and the rostral plates, and in my original description I 

 stated that the second pair of internasals is divided — that is, there are 

 two pairs of prefrontonasals. These, with the internasals, are exclusive 

 of the prefrontals. 



Gerrhonotus (jramineus Cope. 



GERRHONOTUS OAXACiE Giinther. 



Gerrhonotus oaxacw Gunther, Biologia Centrali-Aniericana, Reptiles, p. 36, pi. 



XXIV, fig. A.— BouLENGEK, Cat. Liz. Hrit. Mas., 2d ed., II, 1885, p. 268. 

 Gerrhonotus (Abro^iia) (jramineus BocouRT, Miss. Sc. Mex., Rept., 1878, p. 330, pi. 



XXI, A, figs. 6, 6a; not of Cope. 



Head wide posteriorly; temi)oral and nuchal regions covered with 

 projecting scales. Nasal scute separated from the rostral. Anterior 



