153 
plates, the upper ones flat, the lower curved, all yellow in colour. 
Both plates are formed of two series, a median broad row and two 
lateral ones, the latter composed of rows of subcircular plates, three 
in width, and together about half the width of the median series ; they 
do not extend to the front of the mouth. The upper median series 
are eleven in number, and the lower series seven. Dorsal fin small, 
its base one-sixth less than the spiracle. It is situated on the tail, 
its middle being over the hinder edge of the ventrals. Two serrated 
spines on the tail behind the fin. Tail a little shorter than the disc. 
Colour.—Y ellowish olive above, with blue transverse bars on the 
head and across the disc ; lower surfaces white ; tail black. 
Total length, mclusive of tail, 775 mm. 
Length of disc, 407 mm. ; width, 661mm. The specimen described 
is a male—and, though a dozen or more individuals were netted, only 
one female was obtained. No examples were taken southward of 
Hawke Bay, and, indeed, specimens were obtained only off Poverty 
Bay and in the Bay of Plenty, the depths ranging from 16 to 
57 fathoms, with sandy or muddy bottom. Remains of molluscs were 
generally found in the stomach. 
The generally accepted idea that the pectoral fins are interrupted, 
and reappear as cephalic fins in front of the snout, is recently stated 
by Mr. Regan to be incorrect. He says that the pectoral fins in Mylio- 
batis and allied genera are continuous, but are very muscular, and 
have the anterior edge emarginate.* 
HOLOCEPHALI. 
Family CHIMHRID. 
CALLORHYNCHUS, Cuvier, 1817. 
Callorhynchus callorynchus Linnzeus. 
ELEPHANT-FISH. 
Plate XVI, fig. 2 
Chimera callorynchus Linnzeus, Syst. Nat., ed. x, 1758, p. 236. 
Stations 2, 3, 8-18, 20-23, 27-29, 32-36, 39-48, 51-54, 57, 59-62, 
72-TA, 
Length of head, 4-2; height of body, 5-0 in the length, measured to 
the binge of the catidal: lobe, and exclusive of the acd appendage ; 
the length of the latter is more than twice, and the retrorse foliate 
extremity is thrice, the diameter of the eye; the width of its distal 
half is more than an eye-diameter, and its termination is rounded and 
slightly notched. The eye is situated in the middle length of the 
head, and is contained 6:3 times therein. The dorsal fin arises above 
* Regan, Proc. Zool. Soc., 1906, p. 757. 
