170 CLASS XIV. 



b) PrcBoperculum unarmed. 

 Ephippus Cuv. Dorsal fins two, or dorsal fin deeply emarginate 

 in front of soft i-ays (Taurichthys Cuv.), posterior alone scaly. 

 Add sub-genera Scatophagus and Drepane Cuv. 



Sp. Chceiodon argus L., Scatophagus argus Cuv., Bloch Ichth. Tab. 204, 

 fig. I ; — Cluetodon taurus, Taurichthys varius Cuv. et Val. Poiss. vii. PI. 

 181; both from E. Indies. — ChcBtodon gigas Parkinson, Ephippus gigas 

 Cuv. from the eaf3t coast of America, from New York to Brasil. This species 

 becomes 16" long, which in this family is an extraordinary size. To this 

 species belongs the club-shaped bone described and figured by Olearius 

 {Gottorfische Kunstkammer, Schleswig, 1666, fol. p. 18, Tab. ix. fig. 3) and 

 WoRMius {Mus. Reg. Eafniai, 1696, fol. p. 18, Tab. ix. fig. 2); it is the inter- 

 sjiinal bone, much thickened downwards, to which the first two rays of 

 the anal fin are attached. See a figure and description of the skeleton of 

 this fish (erroneously given as Chcetodon faber) in B. Wolf Diss, de Osse 

 peculiari, Wormio dicto. Berolini, 1824, 4to. 



Ileniochus Cuv. Dorsal fin single, entirely scaly, with one or two 

 anterior rays produced into a very long filament. Body high, short. 

 (Branchiostegous membrane with four or five rays). 



Sp. Chcttodon macrolepidotus L. (and acuminatus ejusd., Mus. Ad. Frid. Tab. 

 33, fig. 3), Bloch Ichth. Tab. 200, fig. i, from the Indian Sea, from the 

 Island of Mauritius to New-Guinea. In another species the scales are 

 very small {Chcetodon cornutus L., Zanclus cornutus Cuv.). 



Clicetodon Cuv. Dorsal fin single, quite scaly; pungent rays sub- 

 equal or anterior and posterior less. Tail short, caudal fin truncate. 

 (Branchiostegous membrane with six rays.) 



Sp. Chcetodon rostratus, Chelmon rostratus Cuv., Linn. Mus. Ad, Frid, Tab. 

 33, fig. 2, Bloch Ichth, Tab. 202, fig. i, Cuv. R. Ani,, ed. ill,, Poiss. PI. 

 40, fig. I ; this fish besprinkles insects that sit on water-plants, like the 

 Toxotes (see above, p. 167). 



Chcetodon chrysozonus K. and "V. Hass. {Chcetodon enneacanthus Cuv., 

 Chcetodon labiatus K. and V. H., Clicetodon melanopus Cuv., auct. Bleeker) 

 Cuv. R, Ani., ed. ill., PI. 38, fig. 2. Both these species are from the E. 

 Indies, as is Chcetodon vagabundus L., Bloch Ichth. Tab. 204, and some 

 others. 



From the western hemisphere there are of the Linnean species Chcetodon 

 striatus L., Mus, Ad. Frid. Tab. 33, fig. 7, Bloch Ichth. Tab. 205, fig. i, 

 and the small Chcetodon capistratus L., Mu^s. Ad. Frid, 1. 1. fig. 4, Bloch 

 1. 1. fig. 9, the last named very common in collections. 



Family XL. SjJaroidei Cuv. (with the addition of Mcenoidei 

 ejusd.). Body compressed, elongate or oval, covered with large 

 scales, not thick, ctenoid. Eyes large. Teeth mostly in jaws oply ; 



