184 MR. J. GOULD ON A NEW MERGUS. [Apr. 26, 
space ; the pectorals reach to the origin of the anal fin. General 
coloration yellowish, punctured with black in particular on the upper _ 
part and sides ; snout blackish ; lower jaw sometimes punctured with 
black also ; beneath whitish. Anal papilla very small. Total length 
3% inches. 
Hab. Upper Hawkesbury River; freshwater lagoons near Bronte 
and Richmond, Eastern Creek, and other tributaries of the Hawkes- 
bury. 
There are just twelve species of fishes from the Nepean and 
Hawkesbury ; but I am assured by Mr. George M. Pitt, jun., to 
whom I am chiefly indebted for my specimens, that the river con- 
tains more than twenty different kinds of fish: the remaining spe- 
cies I hope to capture during the course of this summer, and I 
shall furnish an account of them in due time. Of our northern 
rivers, the Hastings, the Richmond, and the Clarence, I know but 
little ; that they team with fish there is no doubt, and that many new 
genera and species will be found amongst them is certain. Many of 
the settlers upon the banks of these streams have promised their co- 
operation ; and Mr. James F. Wilcox, who resides on the Clarence 
River, has supplied me already with many interesting specimens. 
I received from him Oligorus macquariensis, Cuv. & Val., Therapon 
unicolor (?), Galaxias scriba, Rich., Eleotris mogunda, Rich., and 
E. compressus, sp. nov., which may be described as follows :— 
ELEOTRIS COMPRESSUS, Sp. nov. 
D.C. ito10. A... L. lat. 28/30. 
10" 
Eight series of scales between the origin of the posterior dorsal fin 
and the anal. Body cyprinoid, compressed ; the height of the body 
is contained three times and three-quarters in the total length, and 
the head four times ; the horizontal diameter of the eye is one-fourth 
of the length of the head, and is contained once and a half in the 
interorbital space; the snout is short, lower jaw longest; mouth 
rather small; head scaly. 
Coloration reddish brown, with five or six indistinct cross bands, 
formed of the close-dotted black spots with which the scales are 
covered. The second dorsal and the anal are rather long, and more 
or less marked with black at the base and top; besides this, the hinder 
part of the second dorsal is speckled with white. Anal papilla of 
moderate size and forked. Total length 33 inches. 
Hab. Clarence River, and creeks near Port Denison. Discovered 
by Mr. James F. Wilcox. 
6. Descriprion oF A NEw SPECIES OF THE GENUS MeERGuUS. 
By Joun Goutp, F.R.S., Etc. 
Mereus squamatus, Gould. 
Crown of the head, lengthened crest, and neck rusty brown ; upper 
surface brownish grey ; tuft of feathers at the insertion of the wing 
