110 The Philippine Journal of Science 1919 
Remarks.—Two other specimens besides the type were taken, 
an adult and a young. These two specimens were forwarded 
to Dr. Lawrence E. Griffin at the University of Pittsburg. 
They have not been at hand for comparison. All were taken 
in masses of fern roots growing in high forest trees. This 
species has no close affinities among the Philippine species unless 
T’. mindanensis be regarded as such. From this it differs in the 
size of the frontal, which is larger than the prefrontal in T. 
mindanensis. One has two, the other three, labials touching 
the nasal. In one the head is very rough; in the other, com- 
paratively smooth. Many other differences are obvious on a com- 
parison of the two descriptions. The roughness of the head is 
not unlike that in T. rossii and T. regine, but here the resem- 
blance ceases. 
Trimeresurus megregori sp. nov. Fig, 1. 
Type.—No. 748, Bureau of Science collection; collected on 
Batan Island, Batanes group (lying between Luzon and For- 
mosa), June 12, 1907, by Richard C. McGregor. 
Description of type.—Rostral 
a little wider than high, slightly 
narrower at top, visible above 
as a narrow line, bordered be- 
hind by a rectangular scale, dis- 
tinctly enlarged, which separates 
the two much enlarged supra- 
nasals; latter not or barely in 
contact with rostral, separated 
from anterior supraocular by 
three (four on right side) scales; 
two enlarged supraoculars fol- 
lowed by one or two small scales 
above eye; nasal single, large, 
triangular, visible above as a 
narrow line, the nostril, which 
is vertically oval, pierced near 
the lower border; canthus ros- 
tralis sharp, formed by the edge 
of nasal, the narrow elongate 
loreal following nasal, and supe- 
rior preocular; facia] pit sur- 
z 
8, 
Hie 
oe 
A? 
He 
4ope 
fie 
o 
f 
if 
Fic. 1. Trimeresurus megregori sp. nov., ° . 
from the type, X 1. a, head, lateral OUNded by second labial, which 
view; b, head, dorsal view; ¢, chin. forms anterior border of pit, and 
