202 SNAKES OF THE PHILIPPINE ISLANDS 



ing instead of angular; wider than supraocular and about the 

 same length ; parietals large, longer than wide, very much larger 

 than frontal, in contact laterally with one temporal and upper 

 postocular; supraoculars much wider behind than anteriorly, 

 broadly in contact with prefrontals ; nasal divided, the anterior 

 part quadrangular, lower than posterior; nostril large; loreal 

 small, narrowly entering eye below preocular, touching 2 labials ; 

 preocular higher than wide ; eye large, equal to its distance from 

 middle of nostril; 2 postoculars, upper slightly the larger; tem- 

 porals, 2 + 2 ; 8 upper labials, third, fourth, and fifth broadly 

 entering orbit; labials in the following order of size; seventh, 

 sixth, eighth, fifth, third, fourth, second, first; mental small, as 

 wide as rostral ; 10 lower labials, 5 touching anterior chin shields, ■ 

 which are double the size of second pair; third pair of chin 

 shields small; mental groove very deep; scales in 21 rows around 

 body; ventrals, 228; anal single; subcaudals, 80 pairs. 



C(Aor 'in life. — Above bluish, the larger part of the scales 

 with a wash of light gray-ultramarine, more pronounced on pos- 

 terior part of body; back with 63 narrow, bluish white, trans- 

 verse bands extending to edge of ventrals where they widen 

 slightly and are more yellowish in color on belly; tail with 

 16 bands; yellowish dots on supraoculars and prefrontals; a row 

 of bluish white dots outlines the posterior temporal region; 

 upper and lower labials each with a large yellowish white area 

 enclosed with black, except on border of mouth ; lateral head 

 scales with light spots ; anterior ventrals and chin scales yellow- 

 ish edged with black. 



Measurements of Boiga doidrophila divcrgcyxs subsp. nor. 



mm. 



Total length 1,370 



Snout to vent 1,114 



Tail 256 



Width of head 27 



Length of head 35 



Variation. — Two specimens in the Bureau of Science collection 



from Polillo '■' show the following variations from the type: 



The loreal in both specimens is smaller and does not enter eye; 



2 

 the temporal formula of one is 2 + 3 and -h 3 and of the 



other, 2 + 3 ; in one specimen there are four labials touching 

 the first chin shields, in the other (a young one) five; the ground 

 color is brown, darker on anterior part of body; the transverse 



Griffin. Philip. .Tourn. Sci. S D 5 (1910) 214. 



