A REVISION OF THE AUSTRALIAN ORECTOLOBIDA. 285 
origins of anal and second dorsal less than the interval 
between the dorsals and 4°60 in its distance from the ven- 
trals; its height is 2°80 in its base; free space between 
anal and caudal 1°85 in the base of the anal. Depth of 
lower caudal lobe 6°20 in its length, which is 4°35 in the 
total length, its extremity rounded; tip of vertebral column 
not nearly reaching the margin of the fin. Pectoral fin 
obovate, its distance from the ventral fin 1°50 in that from 
the tip of the snout, its base rather more than 2°00 in its 
greatest width and rather less than 2°00 in its length, which 
is 1°85 in the head. Origin of ventral fin a little nearer to 
the first dorsal than to the pectoral. A slight but distinct 
vertebral groove between the occiput and the first dorsal; 
lateral line strongly marked, forming a ridge, connected 
by a transverse line above the spiracles. Upper surfaces, 
sides, and tail ashy-gray; lower surface of head, throat, 
and abdomen white. (Named after Mr. John Colclough, late 
of Brisbane, and now holding a responsible position in the 
Aru Islands). 
The specimen described above is an immature male 
measuring 457 millimeters. It was caught at Mud Island, 
Moreton Bay, on the 8th of June, 1906, by Mr. F. L. Phillips, 
and presented by him to the A. F. A.Q. Museum, Cat. No. 
of type 410. A second specimen, also a young male of 
similar size has been for some years in the Queensland 
Museum. 
CHILOSCYLLIUM, Muller and Henle. 
Chiloscyllium, Miller and Henle, Arch. f. Nat., 1837, i, p. 395 
and Plagvost., p. 37, 1841 (plagiosum); Cantor, Journ. As. 
Soc. Bengal, xviii, 1849, p. 1374; Jordan and Fowler, Proc. 
U.S. Nat. Mus., xxvi, 1903, p. 603; Giinth., Cat. Fish., viii, 
1870, p. 410; Regan, Proc. Zool. Soc., 1908, ii, p. 358. 
Hemiscyllium, Miller and Henle, Arch. f. Nat., 1838, i, p. 83 and 
Plagiost., 1841, p. 16 (ocellatum ). 
