9. CHCEKOPS. 95 



d. Half-grown. From Mr. Brandt's Collection. 



e. Half- grown : stuffed. Cape York, in 63 fathoms, with hook and 



line. Voyage of the ' Rattlesnake.' 



Sir John Richardson has evidently confounded the measurements 

 of the typical specimens of this and other aUied species. A specimen 

 6^ inches in length does not exist in the British Museum Collection. 



Cossyphus cyanostohis, Richards. Ichthyol. Chin. p. 256, is founded 

 on a mounted specimen, on two others in spirits, and, finally, on a 

 drawing of Mr. Reeves. The mounted specimen has evidently served 

 as the type not only of 0. cyanostohis, but also of a second species (C 

 ommopterus), to which it properly belongs. Secondly, the two speci- 

 mens in spirits belong to a very different species, which is distin- 

 guished by a large pearl-coloured spot on the side of the body {Ch. 

 oligacanthus). Thus the species rests entirely on Mr. Reeves's drawing, 

 which is described by Sir J. Richardson ; that drawing shows only 

 twelve dorsal spines. 



3. Choerops leucozona. 

 Crenilabrufl leucozona, Bleek. Biliton, iv. p. 238. 



D. )1, A. |. L. lat. 25-26. 



Posterior canine tooth ? 



Serrature of the praeoperculum very distinct. Head obtuse. Vio- 

 let-olive, with five whitish cross-bands, the first below the eye, the 

 second behind the axil, the fifth on the taU. Dorsal fin with a 

 blackish spot between the two first dorsal spines, with another be- 

 tween the two last, and with several other violet-olive spots ; base of 

 the pectoral with a large double brownish-violet and whitish spot. 

 {BL) 



Biliton. 



The single specimen observed is 44 mm. long, and is probably the 

 immature state of some other known species, perhaps of Choerops 

 ommopterus. 



4. Chcerops anchorago. 



Spams anchorago, Bl. v. p. 108. taf. 276 ; Bl Schn. p. 276. 

 Cossyphus anchorago, Trosch. in Wiegm, Arch. 1840, p. 279. 



D. ^. A.|. L. lat. 30. 



A posterior canine tooth, absent in yoimg specimens. Praeoper- 

 culum serrated. Head nearly as high as long. Scales on the prae- 

 operculum small, numerous, imbricate. Body with four dark, broad 

 cross-bands, the middle of which are sometimes confluent ; a white 

 cross-band on the back of the tail, behind the dorsal ; sides of the 

 head with yellow (in life red ?) dots ; base of the pectoral brown ; 

 dorsal with two dark longitudinal Hues ; the other fins yellowish, 



Amboyna. 



a. Young. Amboyna. Purchased of Mr. Frank. 



