SYSTEMATIC ACCOUNT OF THE SPECIES. 157 
separated by about five rows of rugose or tricarinate scales; head-seales gener- 
ally keeled or rugose; about seven scales in a row between the nostrils; supra- 
ocular semicircles separated by two or three rows of rugose or keeled scales: 
occipital oval, about one half the size of ear opening; separated from the semi- 
circles by about four rows of scales: supraocular discs large, not very sharply 
defined, composed of a large number of not very greatly enlarged, keeled scales; 
canthus rostralis prominent, composed of about seven keeled scales, extending 
almost to nostril, extending backward it forms a distinct superciliary ridge 
which extends posteriorly to the centre of the eye; loreal rows, seven: subocular 
semicircles composed of large keeled scales, broadly in contact with supralabials; 
eight smooth supralabials, the suture between the sixth and seventh being 
about under the centre of the eye; temporals granular, the central scales of the 
temporal area smallest, a faintly indicated supratemporal line; scales of back 
and sides small and granular, no enlarged middorsals; ventrals large, cycloid, 
imbricating, smooth; scales of anterior aspect of both fore and hind limbs 
enlarged, imbricating and strongly keeled; body short and strongly compressed ; 
a well-defined nuchal and dorsal fold; the adpressed hind limb reaches almost 
to the nostril; about seventeen lamellae under phalanges II and III of the 
fourth toe; digital dilations well developed; tail very strongly compressed, 
with a high “fin”; each section of the fin composed of about nine rows of scales 
which are rather uniform in size (not increasing in size in a dorsal direction as 
in homolechis); the scales of the limiting rows are not very greatly enlarged upon 
either tail or ‘fin’; postanal scales not conspicuously enlarged. 
Colour (freshly killed specimen) : — Grayish brown, darker vertical bands 
upon body and tail; throat in both males and females streaked longitudinally ; 
scattered light dots upon lips and sides; dewlap very large, of a rather brilliant 
light brick-red, edged with light yellow, almost white upon the thickened mar- 
gin and crossed by three deep carmine oblique bands upon the light brick-red 
ground. 
Dimensions: — Total length (tail slightly mutilated) 130 mm. 
Vent to tip of tail 55 mm. 
Width of head 7.5+ mm. 
Fore leg 25 mm. 
Hind leg 48 mm. 
We little expected so remarkable a novelty as the one here described, 
when in the spring of 1916 Senor Rodriguez started on a collecting trip to the 
northern coastal region of eastern Oriente. The greatly developed fin with its 
