▼ 



142 SNAKES OF THE PHILIPPINE ISLANDS 



Measurements of Holurchus aiicorus (Gimrd) . 



mm. 



651 



Total length 



Snout to vent 



Tan II 



Width of head tZ 



Length of head 



Farmtton.— There seems to be much variation in this species, 

 as the attached table shows. The only definite localities given 

 are on Luzon, and it is highly probable that specimens without 

 locality marks are also from that island. The ventrals vary 

 between 149 and 165, the subcaudals, between 34 and 43. The 

 temporals vary equally between 1 + 2 and 2 + 2. One speci- 

 men (No. 1554, Bureau of Science collection) has only a single 

 labial (the third) entering the eye; however, there is an obvious 

 fusion of the third and fourth labials. In No. 700, Bureau of 

 Science collection, the anchor-shaped marking is disconnected 

 on the frontal, thus following the marking in H. bitrksi. In 

 all the specimens save the one described there are indications of 

 narrow bands between the larger dark bands ; they are usually 

 represented by a few irregular dots across the body or merely 

 by lateral dots. No variations are noted in the number of pre- 

 oculars, postoculars, anals, or loreals. 



Table 25. — Measurements and scale counts of HolarcJiu^ ancorus (Girard) . 



Locality. 



Leng-th. Tail 



Manila 



Benguet..-. 

 Unknown . 

 Zambales .. 



Bataan 



Unknown . 

 Manila 



Ven- 

 trals. 



160 



164 



165 



163 



163 ! 



149 



163 



Sub- 

 eau- 

 dalB. 



43 

 40 

 37 

 42 

 43 

 42 



613 

 700 

 762 

 820 



1664 

 429 



Labials entering: eye. 



Scale 

 rows. 



Tem- i 

 porals. 



n 2 



2 + 2 

 2+2 

 2 + 2 

 1+2 

 2 + 2 

 IJ 2 

 1 1 2 



Bureau of Science. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 v.. H. Taylor. 



