gQQ SNAKES OF THE PHILIPPINE ISLANDS 



Measurements of Trimeresurus wagleri alboviridis Taylor. 



mm. 

 Total length 370 



Snout to vent 308 



Tail 62 



Remarks.— This form differs from all other subspecies of Tn- 

 meresurus wagleri in the very much higher average number of 

 ventrals (29 more than the average, 24 more than any recorded 

 Philippine form, and 10 more than any specimen reported in 

 Boulenger's catalogue). The upper head scales are smaller, 

 there being 5 or 6 more between the supraoculars than in other 

 subspecies. The small lateral notches in the scales are distinc- 

 tive. I captured the type in the low mountains of Negros, in 

 small bushes. This is the only specimen known. 



TRIMERESURUS WAGLERI SUBANNULATUS (Gray) 



Plate 37, fig. 3 



Trimestvrus subannulatus Gray, Zool. Misc. (1842) 48; Cat. Vip. 

 Snakes (1849) 9. 



Description of sitbspecies. — Head very distinct from body, very 

 broad, nearly as broad as long; snout short, rather broadened, 

 with a prominent canthus rostralis; eye small; rostral a little 

 higher than wide, visible from above as a mere line; bordered 

 above by 2 rounding scales, forming a suture medially; nasal 

 large, the nostril pierced near the middle of the scale which is 

 bounded above by 3 small, rounding scales, subequal in size; 

 these scales are without keels, including the 2 touching rostral; 

 a large postnasal folded over canthus rostralis, its superior part 

 longest; behind nasal, the loreal and a minute intercalated scale 

 below touch the first labial ; anterior loreal large, narrowly in 

 contact with nasal, forming the anterior border of facial pit, in 

 contact with first 2 labials; posterior border of pit bounded by 

 second preocular and second small loreal; 3 preoculars, the me- 

 dian largest, the inferior very small ; supraocular longer than 

 diameter of eye, its inner margin irregular, in contact v^dth su- 

 perior pre- and postoculars ; 2 small postoculars ; a narrow, 

 curved, elongate subocular borders eye behind and below, sep- 

 arated from labials by a series of small supralabials of unequal 

 size; 2 small scales between third labial and loreals; 9 upper 

 labials, third, fourth, and first largest in the order named ; edges 

 of labials bordering mouth form a wavy line ; 10 lower labials ; 

 mental wider than rostral, about as deep; 1 large pair of chin 

 shields followed by 3 smaller paired scales; 2 labials in contact 

 with first pair of chin shields ; temporals numerous, 4 or 5 lateral 



