94 
ICHTHYOLOGY 
light purple ; the anterior part of the head and the fins are 
yellow ; the operculum gilt. 
Length three inches. 
Port Darwin. 
Nota. — In the Fishes of New Zealand, p. 133, Dr. Hector 
describes a sort from that island nearly allied to Clupea 
Sprattus, but differing chiefly by the dorsal fin being placed 
further back. He considers it as a simple variety of the 
European sort, and, following Dr. Gunther's habit of naming 
varieties, he calls it Clupea JSprattus var. Antipodum. It is 
useless to add that the characters we have just mentioned 
prove it to be a most distinct species. 
TETRODON DARWINII. 
Entering in the division called Gastrophysus by Muller and 
characterised by : no scutes forming a carapace ; nasal organs 
very conspicuous ; back broad, not compressed ; nasal openings 
two on each side, opposite to each other, and situated on a 
rather prominent papillse ; a fold along the lower part of the 
tail, receiving the anal fin ; body in part spiny. 
The height of the body contained four times in the total 
length of the fish, and the breadth four and a half in the 
same ; head contained three times and two-thirds in the above ; 
eye three times and a half in the length of the head ; the 
nostrils are situated just in front of the line from the anterior 
parts of the eyes, and they are placed from these organs at a 
distance equal to one-half the diameter of the orbit. Snout 
rather obtuse, this being nearer to its extremity than to the 
gill opening. Two rooted minute spines cover the upper part 
of the head and the back up to near the end of the pectorals 
where they terminate in forming a triangle. The front part 
of the head and cheeks are smooth ; the spines beginning 
behind the nostrils ; the space between the end of the spiny 
part and the base of the dorsal is equal to two-thirds the 
length of the head ; the throat and belly are covered with 
small spines and pores. The dorsal begins at a point equally 
distant from the extremity of the snout and the end of the 
