Was ae f ii. OS a ah Oe ee git 
age > i a am . “ 
ae 
364 COLUBRID, 
than the parietals ; loreal elongate, entering the eye; no prewocular ; 
two postoculars ; temporals 2+ 3; eight upper labials, third, fourth, 
and fifth entering the eye; five lower labials in contact with the 
anterior chin-shields, which are as long as the posterior, or a little 
longer. Scales with a very faint keel along their anterior half, 
in 17 rows. Ventrals 200-208; anal divided; subcaudals 68-74. 
Pale greyish brown above, with black cross bands, the outer portion 
of which is narrowly detached on the side; upper surface of head 
blackish ; lower parts yellowish, dotted with black, and with a 
lateral series of black spots alternating with the dorsal bands. 
Total length 660 millim.; tail 120. 
Japan, 
a-b. 2 (V. 202, 205 ; Nikko, Central C. Maries, Esq. [C.}. 
C. és 70). : Japan. (Types.) } 
5. Dinodon? tessellatus. 
Proterodon tessellatus, Hallow. Proc. Ac. Philad. 1860, p. 499. 
Loreal quite small; a preocular; two postoculars ; temporals 
2+42; eight upper labials, fourth and fifth entering the eye. Scales 
with a slight keel extending halfway along the middle, in 21 rows. 
Ventrals 211; anal divided; subcaudals 73. Olive above; belly 
orange, tessellated with black. 
Total length 900 millim. 
Japan. 
50. STEGONOTUS. 
Lycodon, part., Schleg. Phys. Serp. ii. p. 104 (1837); Dum. §& Bibr. 
Erg. Gen. vii. p. 367 (1854) ; Jan, Frenco sist. Ofid. p. 97 (1863). 
Stegonotus, Dum. § Bibr. Mém. Ac. Se. xxiii. 1853, p. 477, and Erp. 
Gén. vii. p. 680. 
Herpetodryas, part., Jan, J. c. p. 80. 
Lielaphis, Giinth. Proc. Zool. Soc. ga 59, and 1877, P 129. . 
Zamenophis, Giinth. Ann. & Mag. N. H. (4) ix. 1872, p. 21. 
Pseudolycodon, Peters, Mon. Berl. Ac. 1876, p. 534. i 
? Herbertophis, Macleay, Proc. Iinn. Soc. N. S. W. viii. 1884, 
p. 434. 
Maxillary teeth 15 to 20, increasing in size towards the middle 
of the series, then decreasing in size to the two or three last, which 
Fig. 25. 
SS 
Maxillary and mandible of Stegonotus modestus. 
are again large; anterior mandibular teeth enlarged. Head more i 
or less distinct from neck; cye moderate or rather small, with = 
