60 
FISHES. 
three strong, disjoined tubercles. An almost parallel ridge, composed also of three tubercles, which 
are smaller and united together, passes backwards from the lower part of the orbit, and is succeeded 
by a tubercle on the shoulder, which commences the slightly tubercular lateral line. The cirri , vestiges 
of which remain in the specimen, are “fleshy, six pendent from the lower mandible, two upon the 
upper.” — C. The operculum has two ridges, one of which passes to its angle; the other to the point 
beneath the angle of the prceoperculum. 
The body in height exceeds one-fourth of its length. “The belly is very ventricose.” — C. It 
is covered throughout by a hispid skin, which is rough to the touch, and has no smooth space whatever. 
The pectoral Jius are large. The ventrals, attached under the commencement of the pectorals, 
are exceedingly short, but reach as far as the vent, which is placed very forward, under the middle of 
the anterior lobe of the dorsal fin. The dorsal fin is considerably expanded, and is so deeply divided 
as to give it almost the appearance of two distinct fins. The anal fin is somewhat more expanded 
than the dorsal; it commences considerably behind the vent. The caudal is large, and apparently 
nearly square at its extremity. 
In the specimen preserved in spirit, the ground colour exhibits a tinge of red. Slight traces of 
brownish clouds appear on the side. The dorsal and anal fins are irregularly blotched wilh darker 
brown, the latter chiefly towards its margin, where the bands are somewhat oblique. The pectoral 
fin is so deeply coloured as to appear almost black, with a few paler spaces, and a bluish cast 
in the middle. 
Of its colours when recent, no notice occurs in the notes of Mr. Collie, except that its “ iris 
is bronzed.” — C. The notes of that gentleman furnish, however, the following anatomical particulars: 
“Air-bladder wanting. 
“ Stomach, a large membranous sac. 
“ Caeca several, ventricose. 
“ Liver of a light clay-colour. 
“ Intestinal canal short.” 
Mr. Collie also informs us that they were “not numerous.” They were “caught in the seine.” — C. 
Only one specimen was preserved, which is now in the British Museum. Its length is nearly 
six inches. On this individual, which, although in spirit, is not in very good condition, was founded the 
Blepsias bilobus of MM. Cuvier and Valenciennes, by the latter of whom it was described on his 
visit to London in the spring of 1829. Our description and figure rest on the same specimen. 
From the Blepsias trilobus the Peropus bilobus is readily distinguishable, not merely by its generic 
marks, but also by its greater breadth, and the universal roughness of its skin. 
Fam. CHJ3TODONTULB. 
Ch^todon strigangulus. Sol. MSS. 
Chaet. ceerulescens ; fascia oculari nigra flavo marginatH ; strigis corporis numerosis , transversis, in medio antrorsum 
angulatis. 
D. if. A. C. 16. P. 16. V. i. 
PLATE XVII. FIG. 2. 
Hab. in Oceano Pacifico Australi et Mari Indico. 
Our knowledge of this species, as collected by the present expedition, is limited to a drawing of 
it preserved by Mr. Smyth, which is stated to be two-thirds of the natural size. On comparing this 
drawing with a drawing made for Sir Joseph Banks by the draughtsman who accpmpanied him in 
Captain Cook’s first voyage of discovery, it is evident that, notwithstanding some trifling discrepancies, 
both are intended to represent the same fish. We have consequently preserved the manuscript name 
applied to it by Dr. Solander, whose notes inform us that is termed by the natives of Taiti, Palafiah, 
Parahah, and Parliahatharka. Dr. Solander’s description, which we have been allowed to copy from 
his MSS. (forming part of the Banksian Collection now in the British Museum), is as follows: 
