178 
HORN EXPEDITION—PISCES. 
this "raclually disappears on its lower margin; operculum with two flat, hroad 
spines, of which the lower is the smaller. The first dors.al spine is very .small, the 
second and third longer, the next four are the longest and of about equal length, 
the following gradually decrease in length towards the soft dorsal fin. A single 
row of long, narrow scales partly cover the roots of the dorsal spines. Anal fin 
with three strong spines, of which the second is the largest. 
Cohuratton .*—Back silvery bluish-green, passing into a creamy-white below. 
Body Avith five black vertical bands—the first in front of the spinous dorsal fin, 
the second from the fifth and sixth, the third from the last dorsal spine, the fourth 
from about the middle of the soft dorsal, and the fifth across tlie tail. Specimens 
about two inches in length show three longitudinal rows of black spots, which are 
indistinctly seen in the larger ones. 
Localities .—Palm Creek, Red Bank Creek, McDonnell Ranges. 
(3) Nematoce7ttris totei., sp.n. (Fig. 2.) 
D. 1/5, 1/10. A. 1/18. L. lat. 32-34. L. trans. v. 10-12. 
The height of the body is a little more than one-fourth of the total length ; 
the length of the head is equal to the height of the liody ; the length of the snout, 
the diameter of the eye, and the width of the operculum are equal. Interorbital 
space scaleless, rugose, and forming a well-marked canthus rostralis. Body strongly 
compressed and elevated on the ventral region. FTead small and pointed towards the 
snout; eye large, silvery ; mouth oblique; villiform teeth in both jaws and on the 
vomer and palate. No lateral line. A broad, silvery, lateral band occupies four 
to five rows of scales ; scales large, cycloid. Dorsal and anal fins elongate, 
reaching nearly to the root of the caudal. 
Colouratio72. —A dirty yellow above the lateral band, and changing into a 
pinkish tinge below the same. Each scale of the body is marked with a small 
squai’e-shaped silvery-tinted spot. These spots form about seven longitudinal rows 
which extend over the whole length of the body. Fins transparent, with a black 
margin. 
Length of largest specimen 3| inch. 
Localities. —Horse-shoe Bend, Finke River, Ellery’s Creek, Red Bank Creek, 
Idracowra, Finke River. 
* In all cases the colouration is described from specimens preserved in spirit. 
