Cope. } d4 {May 4, 
ral small, as high as wide, just visible from above. Nasals depressed, 
loreal a little longer than high ; oculars 1-2, the anterior impressed, nearly 
reaching the frontal. Temporals 1-1-2. Internasals longer than wide ; pre- 
frontals subquadrate. Frontal long and narrow, not angulate posteriorly ; 
parietals notched behind, short, their common suture a little more than 
half the length of the frontal. Ten inferior labials, six of which are in 
contact with the geneials, of which the posterior pair is a little longer than 
the anterior. Gastrosteges 202 ; anal double ; urosteges 938. 
Color yellow, strongly tinged with brown above, and with orange on the 
labial plates and lower surfaces. 
No. 3, from Pacasmayo. 
This beautiful species presents a new type of color for the genus. 
9. DRYOPHYLAX ELEGANS Tsch. Lygophis elegans Tsch., Fauna Peruana, 
p. 538, Pl. VI. Lygophis pecilostomus Cope, Journ. Acad. Phila. 1875, 
180. 
This species was described from a young individual. Examination of 
several adult specimens from Prof. Orton’s collection shows that the last 
maxillary tooth is grooved, though not deeply, and that the scales have a 
single apical fossa. The coloration is more striking in the adult than in 
the young, and is quite elegant. The ground is a light yellowish gray, 
and there are two rows of bright rufous darker edged spots on the back. 
These spots are either confluent transversely, forming a single row of broad 
spots, or alternating, so as to form a zigzag band. The latter condition 
prevails on the posterior part of the body, and the band becomes regular 
on the entire middle line of the tail. There are three longitudinal dark 
gray lines on each side, one on the middles of each of the first two rows of 
scales, and one on the ends of the gastrosteges. These become more or less 
fused on the tail, forming a single lateral band. A broad brown band from 
the muzzle through the eye to the first dorsal spot. Lips, gular region, and 
anterior gastrosteges, brown speckled ; a longitudinal median nuchal band. 
Frontal plate dusky, with a median longitudinal light band. Length 
of the longest specimem M. .901 ; tail .280. 
Nos. 12, 16, 26, 27, Chimbote Valley. 
This species is the type of the genus Lygophis Fitz. where first charac- 
terized ; 7. ¢. in the Fauna Peruana. It must therefore be regarded asa 
synonyme of Dryophylaz Wagl. The genus to which I have given the 
name Lygophis (Proceed. Acad. Phila. 1862, p. 75, type Z. lineatus) may 
then be called Aporophis. 
10. Dry1opHIs ACUMINATA Wied.; Dryinus eneus, Wagl. Dum. Bibr. 
VII, 819. 
No. 10. Chimbote Valley. 
11. DryMoxnrus HEATHII Cope. Journ. Acad. Philada. 1875. p. 179. 
This species is nearly allied to the D. reticulatus ( Herpetodyas), Peters, 
Monatsberichte, Berlin, 1863, 285. I add to my previous description that in 
a large specimen, the interocular space is only .001 w’ ~) than the length 
j 
