162 WAITE 
on the first arch, ten being on the lower limb, pseudobranchie 
feebly developed. 
Body elongate, slightly compressed, with three longitudinal 
ridges, especially well-marked posteriorly, one ridge above, and 
two below the lateral line; the width of the body is three-fourths 
its depth, it is flattened above and below anteriorly, less so 
behind. 
Teeth.—No teeth in the jaws, some minute teeth at the end of 
the vomer, and seven larger curved teeth on the tongue, near its 
tip. 
Fins.—The dorsal fin originates midway between the end of 
the snout and the hinder insertion of the adipose fin; the first 
ray is less than half the length of the second, which is the 
longest, and equals the length of the snout plus the eye, the 
length of the base equals the diameter of the eye, the extreme 
length of the adipose fin being the same; the latter is situated 
over the middle of the anal; the anal is lower than the rayed. 
dorsal; the pectoral is placed low, and is longer than the ventral, 
the latter originates beneath the penultimate ray of the dorsal; 
the caudal is forked, and has many short rays above and below, 
extending forward more than one-third its distance to the 
adipose fin; the peduncle is twice as long as deep, or one-third 
greater than the diameter of the eye. 
Scales—Head naked, the scales on the body are large and 
deciduous, those of the lateral line more adherent; these, as are 
also those of the three longitudinal ridges, notched in the 
centre. The lateral line dips slightly in front thence runs 
straight to the base of the caudal. 
Colours—The body is yellowish or silvery, with very pale- 
brown semi-cross bands, at least in the young, three before the 
dorsal, one at its base, three between this and the adipose fin, 
and one between the latter and the caudal: they do not extend 
below the lateral line. There is also a polished silvery band 
along the middle of the sides; eye blue with a silver patch above 
the pupil. 
Length.—184 mm., attains to 191 mm. 
The Silverside was generally obtained in all waters from 
Otago to the Bay of Plenty, also at the Chatham Islands and at 
depths between the extremes of 16 and 105 fathoms. A single 
example taken at Station 75 was voided by a Red Cod 
(Physiculus bachus). 
The respective descriptions of Hutton and Clarke apply to the 
same fish, and were published within four months of each other, 
the name A. elongata having priority. 
