416 ON SOME OPHIDIANS PROM KING's SOUND, N.-W. AUSTRALIA, 



NOTES ON SOME OPHIDIANS FROM KING'S SOUND, 

 NORTH-WEST AUSTRALIA. 



By William Macleay, F.L.S. 



The snakes collected by Mr. Froggatt in the vicinity of King's 

 Sound during last year consisted of six species only, but of these 

 two species are undoubtedly new. 



Those previously described are — 



Nardoa Gilbert!, Gray. Two specimens. 

 Brachysoma simile, Macleay. One specimen. 

 PsEUDECHis Darwiniensis, Macleay. Two specimens. 

 AcANTHOPHis ANTARCTICA, Wagler. One specimen. 



The specimen of Acanthophis is very young, too young for 

 proper determination, and may be distinct from the Antarctica of 

 the eastern parts of Australia. I find that the number of sub- 

 caudal shields in Pseudechis Dariviniensis is very variable in the 

 two specimens got by Mr. Froggatt ; one numbers 39 entire and 

 15 double sub-caudal plates, the other 34 entire and 30 double. 

 The following are new species : — 



DiPSAS ORNATA, n.Sp. 



Scales in 15 rows. 

 Anal plate entire. 

 Abdominal plates, 277. 

 Sub-caudals, 120/120. 

 Total length, 4 feet. 

 Head, 1 inch. 

 Tail, 9 inches. 



