452 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
III. OCYURUS. 
Ocyurus Gill, Proc. Ac. Nat. Sci. Phila. 1862, 236 (chrysurus). 
Type: Sparus chrysurus Bloch. 
Etymology: dxbs, swift; obpa tail. 
The skull of the single species now referred to Ocyurus deviates so 
far from that of the ordinary Lutjanus that its separation as a distinet 
genus seems to. be fully justified. The species shows numerous minor 
peculiarities, as the peculiar form of the body, the large caudal fin, the 
small head, as well as an increased number of gill-rakers and the 
presence (in the adult) of pterygoid teeth. 
ANALYSIS OF SPECIES OF OCYURUS. 
a. Gill-rakers long and numerous, about 20 developed on lower part of arch; mouth 
small; lower jaw projecting; canines small, in upper jaw only; body elliptical, 
elongate, with very slender caudal peduncle; caudal fin deeply forked, longer 
than head; eye small; occipital keel high; preorbital narrow; teeth on vomer in 
an anchor-shaped patch; adult with anarrow band of teeth on pterygoids; scales 
small, those above lateral line in very oblique series; soft dorsal and anal low; 
anal spines weak; olivaceous, somewhat rosy-tinged; a broad yellow lateral 
band, with yellowish blotches above it and some yellow streaks below it; cauda] 
deep yellow; other fins mostly yellow. Head, 3} in length; depth, 3. D. x, 13; 
A.1, 8or9. Scales 8-65-16. ...----.-.---- .- 2-22 ee eee eee eee CHRYSURUS, 23. 
23. OCYURUS CHRYSURUS. (Yellow-tail; Rabirubia. ) 
Acara pitamba Marcgrave, Hist. Brasil., 1648, 155. 
Rabirubia Parra, Descr. Dif. Piezas, Hist. Nat., pl. 20, f. 1, 1787 (Cuba). 
Sparus chrysurus Bloch, Ichthyol., taf. 262, 1790 (after Maregrave) ; Lacépéde, Hist. 
Nat. Poiss., rv, 115, 1803 (copied). 
Grammistes chrysurus, Bloch & Schneider, Syst. Ichth., 1801, 187 (copied). 
Mesoprion chrysurus, Cuy. & Val., 1, 459, 1828 (Martinique); Guichenot, Ramon de la 
Sagra, Hist. Cuba, 24, about 1850 (Cuba); Giinther, 1, 186, 1859 (Puerto 
Cabello, Jamaica, Trinidad). 
Ocyurus chrysurus Gill, Proc. Ac. Nat. Sci. Phila., 1862, 236 (name only); Poey, Synop- 
sis, 295, 1868; Cope, Trans. Am. Philos. Soc., 1871, 468 (St. Martins, New 
Providence, St. Croix); Poey, Enumeratio, 1875, 40(Cuba); Poey, Bull. U.S. 
F. C. 1882, 118 (Key West); Jordan & Swain, l.c.; Jordan, l.c., 1890, 319 
(Bahia). A 
Lutjanus chrysurus, Vaillant, Miss. Sci. au Mexique, 1875, 133, pl. v; Jordan & Gilbert, 
Syn. Fish. N. A., 1883, 921; Jordan, Proc. U. 8. N. M. 1884, 125 (Key West). 
Anthias rabirubia Bloch & Schneider, Syst. Ichth., 1801, 309 (after Parra). 
Sparus semiluna Lacépede, Hist. Nat. Poiss., tv, 141, 1803 (on a copy of a drawing 
by Plumier). 
Mesoprion aurovittatus Agassiz, Spix, Pisc. Brasil., pl. 66, 1829 (Brazil). 
Ocyurus aurovittatus, Poey, Syn. Pisce. Cubens., 1868, 295; Poey, Enumeratio, 31 
(Cuha). : 
Ocyurus melanurus, Goode, Proc. U. 8. N. M. 1879, 114 (name only; after Perca mela- 
nura L., which is a Hemulon and not a Luijanus). 
Lutjanus melanurus, Jordan & Gilbert, Syn. Fish. N. A., 1883, 548. 
Ocyurus rijgersmai Cope, Trans. Am. Phil. Soc. 1871, 468 (St. Kitts). 
