378 TELIDE. 
2. Dicrodon calliscelis. 
Dicrodon calliscelis, Cope, Journ. Ac. Philad. (2) viii, 1876, p. 163. 
The inner cusp of each tooth smaller than the outer. Nostril in 
the anterior nasal close to the posterior and inferior suture. Frontal 
narrow behind, angulate in front, divided transversely by a suture 
at the penultimate supraocular scute; frontoparietals very small, 
separated by the small interparietal, which is in contact with the 
frontal; two small suboval parietals on each side, and ten or twelve 
large scales surrounding them behind; four supraoculars, the last 
two separated from the frontal by granules ; five upper and five lower 
labials ; six pairs of large chin-shields, the last three smaller and 
separated by two plates from the labials, the anterior pair in contact ; 
gular scales small, smooth, a wide band of smaller scales separating 
them from those of the collar; margin of collar granular ; its middle 
with five transverse rows of unequal transverse scales. Dorsal scales 
commencing as granulations on the interscapular region, and gradually 
increasing in size until they are similar in size to the large ones 
which cover the tail in whorls ; like the latter they are keeled, the 
keels forming continuous lines; there are thirteen series at the 
groin, and eighteen one third the length behind the axille ; nuchal 
scales and those of the sides of the neck and body granular. Ventral 
plates in eight longitudinal rows. Preanals in three longitudinal 
series of alternating rhombic plates. Posterior face of arm, postero- 
superior faces of fore arm, superior and posterior faces of femur, 
and superior face of tibia granular; other faces of limbs scutate. 
Femoral pores eighteen. Olive above, becoming yellow posteriorly 
and on the tail; a dark line bounding the dorsal scales on the 
side, and a row of small blackish spots along the middle of the 
granular lateral band; femur yellow behind, with two parallel 
black bands; tail with light bluish spots on the sides ; lower sur- 
faces yellowish olive. 
millim. millim. 
Total length ...... 343 From snout to vent. 99 
Head (toear) .... 22 Hind limb........ 73 
Width of head .... 14 
Pacasmayo, coast of Northern Peru. 
9. TEIUS. 
Teius, part., Merrem. Tent. Syst. Amph. p. G0. 
Teius, Fitzing. N. Classif. Rept. p. 21. 
Acrantus, Wagler, Syst. Amph. p. 154; Wiegm. Herp. Mex. p. 8; 
Dum. §& Bibr. v. p. 141; Gray, Cat. p. 23. 
Tongue moderately elongate, not retractile, widened and emar- 
ginate posteriorly. Lateral teeth compressed transversely, bicuspid. 
Head with large regular shields ; nostril pierced in the anterior nasal. 
Eyelids developed. Ear exposed. Limbs well developed, anterior 
with five, posterior with four digits, the fifth being rudimentary. 
Dorsal scales small; ventral plates large, subquadrangular, smooth, 
