32 



Friedrich-Wilhelmshafen, Erima, Astrolabe Bay, Huon Bay, 

 Bukaua, Sattelbeig, Bara Bara, Haveri); Valise Island ; Schouten 

 Islands (Mysore).- — Ferguson Island; Trobriand Island; Wood- 

 lark Island; Louisiade Archipelago; Solomon Islands; Bismarck 

 Archipelago; Pelevv Islands. 



Three groups of colour varieties may be distinguished: 



1. Yellow or pale brown above, with dark markings and 

 stripes; lores and temples dark brown with yellow spots. Lower 

 surface yellow, with dark brown blotches or a stripe on each 

 side and speckled with brown in the middle. 



2. Yellow or brown above, with a dark zigzag dorsal band 

 or rhomboidal blackish spots; head with a dark streak on 

 each side. Lower parts spotted with black. 



3. Yellow or pale red-brown above, uniform or with dark spots. 

 Lives on trees. 



2. Enygrus asper (Gthr.). 



Erebophis asper^ Giinther, Proc. Zool. Soc. 1877, p. 132, pi. XXI. 

 Enygrus asper ^ Boulenger, Cat. Sn. I 1893, p. 109. 



Snout prominent, oblique, truncate; canthus rostralis angular; 

 rostral more broad than deep, not visible from above; head 



Fig. 17. Enygrus asper (Gthr.) X Vt- 



covered with small irregular scales with small tubercles or 

 short keels; 8 — 11 scales between the eyes on the forehead; 

 eye bordered by 10 to 15 (18) .scales; nine to thirteen upper 

 labials separated from the eye. Scales in 33 — 39 rows, 



