NOTES ON SOME AUSTRALIAN SHARKS. 
195 
Total length 43 inches ; depth 7| inches ; head to last gill opening 14 ; 
head to first gill opening 10J ; eye 1 in. ; snout 2f ; snout from level of 
anterior eye margins 3J ; snout from nostril 2| ; mouth 4J ; ant. teeth, 
lower jaw, J ; ant. border of nostiil to that of eye, 1 T 5 ^ ; internarial space, 
1| ; post, margin of eye to first gill slit, 6 ; interocular, 2f ; pectoral length 
6f ; pectoral base 3J ; pectoral, inner length from middle of base. 7f ; first 
dorsal, height 3J ; first dorsal, base 3 \ ; termination of first dorsal to origin of 
second dorsal 12] ; second dorsal entirely in advance of anal. Origin of anal 
to that of ventral 8 ; ventral base 2. Clasper If ; axilla of pectoral to origin 
of ventral 12^ ; axilla of pectoral to vertical of dorsal 7 J ; upper caudal lobe 
8 ; lower caudal lobe 6| ; width of caudal peduncle, including keel, 3 ; depth 
half-way between second dorsal and caudal about If. Nostril above anterior 
border of jaw, when lip is retracted. Dorsal nearer pectoral than ventral but 
behind pectoral base. Precaudal pits above and below. Spiracle a minute black 
spot well behind eye. Weight 18J lb. 
General colour very dark navy blue above, changing to dull greyish 
after death. Ventral surface whitish. Eye very dark grey. Shagreen rough, 
satiny. Eive very wide gill slits, before the pectorals ; the last two 
approximate and crowded by insertion of pectoral fin. 
A head of a New South Wales specimen, preserved in 
(22*5 mm.) 3-6 in snout (83). 
Dental formula 
10 + 11 
10 + 10 
spirit, has 
eye 
Interocular width (64) 1-1 in length of snout from vertical of anterior 
margins of eyes (75). Internarial space (38) 1-5 in distance from nostril to 
end of snout (58). The snout in this specimen is much more acute than in 
others, a sexual character, according to Phillipps. 
As regards the South Australian form, Mr. Herbert M. Hale has kindly 
supplied the following information (in lit., 4/3/30) : — 
“ The cast of the Blue Pointer illustrated by Waite in his Fish list and 
Handbook is not in this Museum, and I think it is in the Canterbury Museum. 
Fishermen state that the species is common in our waters but I have seen 
very few specimens. We have a cast of a small example ; it is impossible to 
furnish accurate details cf the dentition, but I have made the following 
measurements, all in mm. 
Snout to mid-caudal region . . . . . . 1,300 
Snout to ant. border of eye . . • • • • 110 
Snout to level of ant. borders of eyes . . . . 100 
Snout to first gill-slit . . . . • • • • 300 
Interorbital space . . • • • • • • 90 
Distance between nostrils • • • • • • 50 
The nostrils are 10 mm. in advance, and 10 mm. above the level, of the 
anterior border of the mouth. The spiracle is apparently absent or minute. 
The specimen was caught by H. Kemp, in Moonta Bay, Spencer Gulf, South 
Australia.” 
