188 L3 
AND FROfJfi FnOM alNGA.PORE. 
221 
behind, nnd tlien interaect ihe dark areAS, until on the posterior part 
of the back and tail there is a double row of brown spots. The white 
bands expand at the side, and, except near t)ie head, bifurcate around 
a dark sjiot. Lower parts whitish. Head with n rather broad central 
dark hand throughout the vertical and occipitah, and joined behind 
to tlie large brown spot on the back uf the neck ; the aides of the 
vertical and occi|iitals, with the? greater part of the sides of the head 
and neck, are pale ; but there is a dark patch on each superciliary 
shield, another on the temporals on each side, and the greater part 
of the snont in front of the eyes is dark brown. 
Length of the specimen 13 inches, of which the tail is or 
nearly one fourth. 
The principal charactera by which this form may be distinguished 
from iV". macuJatum are : — { I ) The greater length of the vertical 
shield : ij) N, taactiiafum tlie vertical is much shorter than an oc- 
cipital, the latter being equal in length to the vertical and post- 
frontals together ; in N, subajmulaium the vertical and postlrontals 
together are much longer than nu occipital. (2) Dentition, there 
being only one larger tooth at the back of the jaw. In N. macuia- 
tum the nasals are described as separated by an indistinct suture ; but 
1 cannot detect with certainty a suture in the lype ; and in the 
second specimen the nasal is certainly undivided 
I think it not impossible that the genus Uli/pe, described by me ' 
in 1878 from a Tenasserim specimen, is allied to Nymphopki- 
dium. Vhpe has but 13 rows of scales round tiie body, and 
there is iio prasocutar above the elongate loreal \ but in other respects 
the genus a|)proBches Nymphophidhtm very closely. 1 am far from 
certain that 1 was right in assigning JJlupe to the L^fcodoniid^et to 
which, it should be remembered, Odontomua wag referred by Dnmml 
and Bibron, although Guntber afterwards showed that the dentition 
differed from the Ly cod out type. 
PTYAS HtrCOSA ftsd Pt, KOKROS. 
There are five specimens belonging to the genus Plijas. One ha* 
15 scales round the middle of the body, two have Iti, and two 17 ; 
in the latter there are 3 loreals ; all have the dorsal scales distinctly 
keeled on the posterior portion of the body. I refer the first three 
to Pt. korrm, the latter two to Pt, mucom ; hut I believe all to 
belong to one specific form and not to deserve to be distinguished, 
except as varieties. Bince deternvining the specimens, I liave ascer- 
tained that the individuals referred to Pt, mucosa are i'rom Hong- 
Kong. 
TftOPlDONOTtJS RKODOMKLAS. 
Tropidmoim rhodomelas, Boie, Isis, 1827, p. 535 j Scblegel, 
Phys. Serp. i. p. 167, ii. p. 310, pi. xii, f. 10, 11. 
1 In Jan'H figure of Odoni&mus $uba}m^aim » suture is filiowu below ihtt 
nostril, but nol abuve. In t>i* RiiocitiHiu examined by me there w on one aido a. 
Bticht groove below the noatril, but no suture. 
' J. A. a B. 1S78, voL \h\i. pt. % p. 128. 
