86 
On Rept iles f rom Islands of Torres Straits. 
upper labial and three lower labials are pitted, but not very 
deeply. Loreal single, very large. The middle pair of 
frontal shields elongate, as long as the vertical, with which 
they are broadly in contact. Vertical seven-sided, not broader 
anteriorly than behind. One anterior and two posterior ocu¬ 
lars. The scales in 41 series. Uniform brown above and 
yellowish below. 
A single specimen, 44 feet long, from Cornwallis Island. 
Liasis duceboracensis , sp. n. 
Fig. 2. 
Liasis duceboracensis : top and side views. 
On reexamination the form from Duke-of-York Island 
proves to be a species distinct from Liasis amethystinus : to 
which, however, it is closely allied. Like the latter species it 
has the loreal region occupied by many small scutes disposed 
in two or three longitudinal series; the rostral also has two 
pits, and four of the upper labial and seven of the lower are 
pitted. But the Duke-of-York-Island species differs by the 
middle pair of frontal shields being in contact with the vertical 
only very slightly or not at all; in the latter case a small azy¬ 
gous shield is intercalated between the frontals and the vertical. 
