220 THE PROCEEDINGS OP THE LINNEAN SOCIETY 



I can scarcely doubt however that they are of distinct species. 

 Curiously enough Dumeril and Bibron describe three specimens 

 of the Timor snake, all differing very widely in coloration, and I 

 find exactly the same number of varieties in the Australian one. 



1st specimen. — White above and below, with occasional black 

 scales, abdominal shields 144; anal large and bifid; sub-caudals 30 

 (some entire.) Total length 2 feet 6 inches, tail 3| inches, 

 diameter of body (widest part) 1| inches, scales in 25 rows. 



2nd specimen. — Black with sides and belly white spotted with 

 black, abdominal shields 148 ; anal large, bifid ; sub-caudals 30, a 

 few entire ; scales in 25 rows. Total length 2 feet 7 inches, tail 

 3|- inches, diameter of body 1| inches. 



3rd specimen. — The whole upper surface black, the sides and 

 belly white, a straight line of demarcation between the two 

 colours ; abdominal shields 145 ; anal large, bifid ; sub-caudals 

 26, nearly all bifid ; scales in 25 rows. Total length 2 feet 4 

 inches, tail 3J inches, diameter of body 1 inch. 



Dendrophis olivacea. 



Abdominal shields 214, sub-caudals 130-130, scales in 13 rows. 

 Total length 4 feet, tail 14 inches, head 1 inch. 



Of very elongate form, head narrow but broader than the 

 neck and very flat, loreal shield nearly twice as long as the 

 height, head and neck above very dark brown or black, the 

 upper labials yellow ; all the rest of the upper surface of a 

 pale olive brown, beneath greenish white. 



The collection contains several specimens of this species at 

 various stages of their growth. 



. PSEUDECHIS DARWINIENSIS. 



Of more elongate form than P. porphyriacus. Head shields 

 much the same as in that species, but the vertical is quite as 

 broad as long, and much wider than the superciliaries. Scales 

 smooth, oval, in 17 rows. Abdominal shields 212, sub-caudals 

 49-^f . Total length 3 feet, tail 5J inches. The upper surface of 

 the head is pale brown, and that of the body and tail reddish 

 brown, the middle of each scale being of a lighter colour than 

 the apex. The whole under surface is of an uniform yellowish 

 white. 



