14 “TERRA NOVA” EXPEDITION. 
CARCHARIIDAE. 
2. Galeus australis, Macleay. 
SQUALIDAE. 
3. Squalus megalops, Waite. 
STOMIATIDAE. 
4, Idiacanthus niger, Regan (Pl. x, fig. 2). 
Idiacanthus niger, Regan, Ann. Mag. Nat. Hist. (8) x1u, 1914, p. 14. 
Depth of body 22 in the length, length of head 133. Snout longer than diameter 
of eye, which is 8} in length of head ; interorbital width 5. Barbel twice as long 
as head. Dorsal 59 ; origin above posterior part of pelvic fins. Anal 38; origin a 
little nearer to base of caudal than to that of pelvics, which is equidistant from 
head and origin of anal. Photophores in ventral series about 37 from isthmus to 
pelvies, 21 from pelvies to anal. Blackish. 
A single specimen, 400 mm. in total length, from the stomach of a ‘“ Groper.” 
Brauer (Valdivia Tiefsee Fische, p. 60) has given a synopsis of the four species of 
this genus hitherto described, in all of which the origin of the dorsal fin is above or in 
advance of the base of the pelvies. J. niger is nearest to J. ferov, Giinth., which has 
a shorter barbel, the dorsal origin above the base of the pelvics, and a longer anal fin 
commencing at a point nearer to the insertion of the pelvics than to the caudal fin. 
The following measurements, in millimetres, are taken from the types of J. niger 
and J. feroa :— 
I. niger. I. ferox. 
Lower jaw. : 5 5 : ‘ : ; : : 28 14 
Barbel . ‘ : ; ; ; : ; ; : 58 24 
Length to base of caudal . F . 5 : : : : 380 192 
>  » Origin of dorsal : ; : , : ie VN 176 66 
3 => Wase Of pelvis - : E ; : : ; : 150 66 
,, from base of pelvics to origin of anal : : : ; 120 58 
Y ,, origin of anal to base of caudal : J F : 110 68 
GONORHYNCHIDAE. 
5. Gonorhynchus gonorhynchus, Linn. 
A small example from a rock-pool at Whangaroa. 
MURAENIDAE. 
6. Muraena nubila, Richards 
HEMIRHAMPHIDAE. 
7. Hemirhamphus intermedius, Cant. 
Lyttelton Harbour. 
