NEW OR INSUFFICIENTLY DESCRIBED FISHES. 37 
CARCHAKIIDiE. 
CARCHARIAS AEENARIUS sp. nov. 
Odontaspis americanus (part.) *Glinther, Brit. Mus. Catal. Fish., viii, 1870, 
p. 392 : Tasmania. Not Mitchill 1815. 
Odontaspis taurus McCoy, Prodr. Zool. Vic, dec. vii, 1882, p. 13, pi. lxiv, 
figg. 1 — e. : Hobson's Bay. Not Rafmesque 1810. 
GRAY NURSE; SAND SHARK; SHOVEL-NOSED SHARK (Melbourne). 
Depth of body 6*33, length of head 5*8, predorsal length 2*33, 
length of upper caudal lobe 1, of peetoral tin 7*2 in total length. 
Width of head 175, depth of head 1/5, preoral length 4/9, width of 
interocular 3, of internasal 4*45, of mouth 2*8, vertical height of 
first dorsal 3 in length of head. 
Body fusiform and robust, its dorsal profile evenly and gently 
arched from the tip of the snout to the base of the caudal fin, 
which is not preceded by a pit. Head not depressed, its length 2*3 
in the trunk. Snout short and obtusely pointed, its length 3 in the 
space between the eye and the first gill-opening, and 1*75 in the 
width of the mouth : space between inner angle of nostril and mouth 
3*5 in its distance from the tip of the snout; tip of mandible 
rounded. Teeth in 1 9 '°~ l 9 series ; first tooth of the outer series 
17-0-17 ' 
smaller than the second or third; fourth, and often fifth, tooth in 
the upper jaw much smaller than those adjacent to it and about as 
long as the tenth ; the last few series iD both jaws small and 
crowded. Eye inserted above the third quarter of the mouth-cleft, 
its diameter one fifth of the preoral length ; interocular region 
strongly convex. Tail short, 1*33 in the head and trunk. 
First dorsal fin inserted one half nearer to the ventral than to 
the pectoral, its anterior border convex, with the outer angle obtusely 
pointed ; posterior angle also obtuse, not quite extending to above 
the origin of the ventral; vertical height of fin 1/15 in its basal 
length. Second dorsal smaller than the first, its distance from 
the origin of the first dorsal 1*55 in that from the tip of the tail ; 
* The South Australian example — 10^ feet long — mentioned by Glinther as 
being in the British Museum collection should rightly be referred to the very 
distinct Carcharias tricuspidatus, Day. (See Day, Fish. India, p. 713). Day's 
species also occurs on the New South Wales coast, but I am still uncertain as to 
its occurrence on the South Australian coast, as Zietz gives us no details and omits 
G. tricuspidatus, besides placing it and Mitsukuina otostoni in a quite distinct 
family. 
