NOTES ON SOME AUSTRALIAN SHARKS. 
189 
351. Terre de Witt, New Holland) from North Western Australia. Thus the 
Black-tip Shark of the Queensland and Northern Australian coasts, ranging 
also to New Guinea and Oceania, should now be called Mapolamia Spallanzani 
(Lesueur). The occurrence of melanopterus in Victoria was noted by McCoy 
(Ann. Mag. Nat. Hist. (3) xx, 1867, p. 183, Hobson’s Bay, 15 feet !) but this 
is more likely to refer to a Whaler Shark (Galeolamnoides macrurus = ? 
Galeolamna greyi). Again, the Hawaiian form called melanopterus may represent 
a new' subspecies, as it appears to differ from the type in the shape of the 
head, especially about the nostrils and mouth, and, to a less extent, in the 
relative position of its fins. 
GILLISQUALUS gen. nov. 
Orthotype, G. amblyrhynchoides , sp. nov. 
Teeth compressed, erect, serrated in upper jaw and minutely serrated in 
lower jaw r , the points not markedly deflected outwards. Spiracles obsolete. 
First dorsal originating over posterior part of pectoral base. General characters 
as described for the species. Differs from Hypoprionodon Gill 1862 mainly in 
having the teeth of the upper jaw serrated. 
Named in honour of Theodore Gill, the great American ichthyologist 
whose taxonomic work on sharks and fishes resulted in a tremendous advance 
in the knowledge of their classification and nomenclature. 
GILLISQUALUS AMBLYRHYNCHOIDES sp. nov. 
(Text Figure 4.) 
Carcharinus amblyrhynchos Ogilby, Mem. Qld. Mus. iii, 1915, p. 132, Cape Bowling Green. 
Carcharhinus amblyrhynchos Ogilby, Mem. Qld. Mus. v, 9, 6, pp. 81 and 94, Cape Bowling 
Green, Coast of North Queensland. Not Carcharias ( Prionodon ) amblyrhynchos 
Bleeker, Nat. Tijdschr. Ned. Ind. x, 1856, p. 467. Near Solombo, Java Sea. 
C. amblyrhynchos was described by Bleeker, and Dumeril added further 
details from Bleeker ’s manuscript but the species was unknown to Gunther and 
to Garman and has apparently never been figured. Ogilby identified as C. ambly- 
rhynchos the shark from Cape Bowling Green described below, but it does not 
agree with the typical description. 
Head, measured to fifth gill opening (145 mm.) about one-quarter of 
the total length (about 600 mm.) Anterior margin of vent midway between 
snout and tip of tail. Head broader than high and longer than broad. Snout 
38 mm. between parallels. Eye 13 mm. deep and 10 long. Interorbital 68, 
eye to first gill opening 69, internarial space 37, preoral length 45, gill openings 
24/25/26/23/18, depth of body about 90. 
Snout to first dorsal 185 mm ; first dorsal base 70 ; first dorsal, height 
about 67 ; interdorsal space 113 ; second dorsal base 28, its height 18*5, 
caudal peduncle 39 or 34 behind anal fin. Lower caudal lobe (61) 2*7 in upper 
c 
