XIV, 1 Taylor: New or Rare Philippine Reptiles 111 
middle and lower preoculars, which are much elongated; three 
preoculars; a narrow elongate subocular, as long as orbit; two 
or three postoculars; ten supralabials, first small, triangular, nar- 
rowly in contact with rostral; second high, reaching almost to 
canthus rostralis; third much the largest, broadly in contact 
with subocular; fourth and fifth scales separated from subocular, 
each by a single scale; temporal scales distinctly enlarged, larger 
than, or as large as, posterior labials; mental broadly triangular, 
wider than rostral; eleven lower labials, first, seventh, and eighth 
largest; a pair of large chin shields, much longer than wide, 
broadly in contact, bordered by three labials; 5 pairs of scales 
between chin shields and first ventral; 28 scales from angles of 
mouth across occiput; 13 scales between supraoculars; 29 scale 
rows on neck (at seventh ventral) ; 21 on body; ventrals, 175; 
56 subcaudals; anal single; temporal scales perfectly smooth, 
body scales slightly keeled on the eight or ten median rows. 
Head rather angular, flattened above and depressed in supra- 
ocular region. Tail prehensile. 
Color in life.—Above bright yellow with a darker yellow lateral 
streak; tail with a few small reddish brown spots near tip (in 
alcohol entire snake almost paper white with practically no 
trace of marking). 
Measurements of type and cotype of Trimeresurus mcgregori sp. nov. 
Type. Cotype. 
r mm. mm. 
Total length 865 702 
Tail 120 100 
Head width 25 25 
Head length 36 33 
Eye to end of snout 12 92 
Eye to mouth 6 5 
Supraocular width 16 14 
Length of eye 4.5 4 
Width of eye 3.2 2.8 
Variation.—A second specimen from the same locality shows 
a certain amount of variation. The scale counts are as follows: 
Ventrals, 179; subcaudals, 59; scale rows on neck (at seventh 
ventral), 29; body, 21 rows; scales between eyes, 13; upper 
labials, 11-10; lower labials, 12; three scales behind supranasals — 
bordering the rostral. On the right side the third labial does 
not touch the subocular; the lateral stripe covers one whole 
and a half scale rows. 
Remarks.—This species belongs to the T. gramineus Shaw 
group, which includes T. flavomaculatus and T. halieus, of the 
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