65 
rent. The first and last dorsal spines are much shorter than the cor- 
responding ones of carponemus, and the notch of the fin is conspi- 
cuous from the greater height of the soft rays. The second anal 
spine is very stout, and it rather exceeds the third one in length. The 
preorbitar is smaller than in that species, and its length does not ex- 
ceed the diameter of the orbit. ‘Ihe face is therefore shorter, and the 
profile rises more steeply to the dorsal, owing to the greater height 
of the fish. The elongated pectoral ray, which is the tenth, reaches 
no farther back than the beginning of the anal. The scales are rather 
large and much tiled. About fifty-two exist on the lateral line, besides 
six or seven rows on the base of the caudal, and there are twenty- 
two rows in the height of the fish. 
Mr. Lempriere, from whom we had the specimens, says that the 
fish is known at Port Arthur under the name of “the Perch,” and 
has a bright silvery hue with dark spots. The specimens still ex- 
hibit many dark brown spots scattered thickly on the back and more 
sparingly on the sides, most of them being rather smaller than the 
exposed disk of a scale. The vertical fins, particularly the caudal, 
are more minutely spotted. The top of the gill-cover is blackish, and 
there is a dark mark on the humeral bone. As is usual in the genus, 
the inside of the mouth and lining of the gill-opening are purplish- 
black. Length 124 inches. Greatest height 32 inches. 
The Cheilodactylus carmichaelis (Hist. des Poiss. v. 360) (Cheto- 
don monodactylus, Carmichael, Linn. Trans. vol. xii. p. 500. pl. 24) 
approaches aspersus in shape, in the length of its long pectoral rays, 
and in the number of fin rays generally, but it is distinguished by 
six short, broad dark bars on the back. The formula of its rays is 
as follows :—Radii.—Br. 6; D.17|24; A.3|12; P.9 et VI.; V. 1|5, 
Carmichael. 
The Cheilodactylus fasciatus (Cuv. et Val. v. 357) of the Cape is 
distinguished by four or five vertical dark bands and five transverse 
_lines on each lobe of the caudal. Its rays are stated to be :— 
Radii.—Br. 5; D. 19|23; A. 3[11; C.17; P.10 et V.; V. 1/5. 
Hist. des Poiss. 
CHEILODACTYLUS GIBBosus, Solander. (Chetodon.) 
Cheetodon gibbosus, Banks, Icon. Parkins. ined. t. 23. 
Cheilodactylus gibbosus, Richardson, Zool. Trans. vol. iii. p. 102. 
Radii.—D. 17|36; A. 3/8; C.144; P. 8 et VI.; V. 1|5, spec. 
(Pisces, Pl. II. fig. 3, 4.) 
This fish inhabits the seas of Van Diemen’s Land and the east 
coast of New Holland, as well as King George’s Sound. A full de- 
scription of it is contained in the ‘Zoological Transactions’ quoted 
above. It has the highest spinous dorsal of any described species of 
Cheilodactylus, and in the distribution of its black bands it bears a 
considerable resemblance to Eques americanus. 
Mr. Neill gives a drawing of it (No. 24), and states that it is 
known to the aborigines of King George’s Sound by the name of 
No. CCV.—Proceepin6s or THE ZooLoGicaL Society. 
