148 
HORN EXPEDITION—REPTILIA. 
Pseudonaja, Giinth. 
(2) Pseudonaja nuchalis, Giinth. 
The live specimens whicli we refer to this species all have the scales in 
seventeen rows, but exhiljit a considerable amount of variation in colouration, and 
to a less extent in the structure of the head-shields. In none are the nasals 
completely divided, but some are semi-divided by a deep groove above or below. 
We give below the colouration of each specimen. A.—Uniform pale brown. 
B.—Pale greyish-brown above, with an indistinct blackish band across the back 
about three inches broad, commencing about three inches from the snout, and 
faint, narrow, greyish bands across the whole length of the body. C.—Uniform 
dark brown. D.—Pale Ijrown above, each scale with a broad dark brown margin, 
head and neck black, E.—Pale greyish-brown with numerous indistinct undulated 
greyish bands. 
Localities. —Alice Springs, between Laurie’s Creek and Glen Edith. 
Distribution. —N. Victoria, N.S.W., Port Essington, Port Darwin. 
(3) Pseudonaja affinis, Giinth. 
The single specimen assigned to this species agrees well with the description 
of the type, except that the scales are in twenty-one rows. 
Locality. —Reedy Creek, George Gill Range. 
These two species do not present any generic differences sufficient to separate 
them from the genus Dienienia. 
Pseudechis, Wagler. 
(4) Pseudechis australis., Gray. 
Two specimens, exhibiting slight variations. 
A. —Sc. 17, V. 217, C. 40^1. Temporals, 2 -f- 2. Colour. —Dark brown above, 
many of the scales, especially on the sides, with a pale yellow spot on the 
anterior margin; ventral plates deep yellow, each with a darker margin. 
B. —Sc. 17, V. 204, C. 8|-|. Temporals, 1+2; nasal single. Colour. — 
Uniform dark brown above, yellowish beneath. 
Locality. —Charlotte Waters. 
