REVIEW OF THE SERRANID^. 
399 
Diplectrum radiate Streets, Bull. U. S. Nat. Mus., VII, 1677 ; Jordan, Proc. U. S. Nat. Mus., 1889, 181 
(Panama). 
Serranus bivittatus Cuv. & Val., Hist. Nat. Poiss., II, 241, 1828 (Martinique) ; Storer, Synop. Fish. N. 
Am., 279, 1846 (copied). 
Centropristis Gunther, Cat. Fish. Brit. Mus., I, 82, 1859 (Martinique; Cuba). 
Ealiperca bivittata Poey, Synop. Pise. Cubens., 282, 1868 (Havana) ; Poey, Enumeratio, 22, 1875 
(Havana). 
Centropristes aijresi Steindachner, Ichth. Notizen, VII, 1, 1868, Taf. I, fig. 1 (Santos). 
Habitat. — Both coasts of tropical America. 
Etymology. — Badialis, radiant, from the radiating preopercular spines. 
Dr. Steindachner has already noted the identity of his Centropristes ayresi from 
Santos, Brazil, with Diplectrum radiale. With Dr. Steindachner we find no difference 
between Atlantic and Pacific examples, although the other Pacific species, D. macro- 
poma, seems to bo a peculiar form. 
It seems evident that the Serranus bivittatus is merely the young of this species. 
Specimens sent to us from Cuba by Poey confirm this supposition, as they differ from 
radiale precisely as the young differs from the adult m formosum. 
We have examined specimens of Diplectrum radiale from Guaymas, Panama, Sam- 
baia, Eio Janeiro, and Havana. 
82. DIPLECTRUM CONCEPTIONB. 
Serranus conceptionis Cuv. &■ Val., II, 246, 1828 (Coucepcion de Chile) ; Lesson, “ Voyage Coquille, Zool., 
II, 236; ” Gay, Hist. Chile, Zool., II, 148; Giiuther, I, 84. 
Habitat. — Coast of Chili. 
Etymology. — From Concepcion de Chile, where the species was first found. 
Weknow this species from the account given by Cuvier and Valenciennes of a speci- 
men inches long. It seems to be a Diplectrum, and it is doubtless distinct from D. 
radiale, its nearest relative. 
Genus XXII.— SERRANUS. 
Serranus Cuvier, Rbgue Animal, Ed. 1, 1817, 276 (based especially on the “ Serrau ” or “ Perche de mer” 
of the coasts of the Mediterranean). 
Serranus Cuvier, Rbgne Animal, Ed. II, 1829 (cabrilla, “ le Serran proprement dit ”)• 
Prionodes Jenyus, Voyage Beagle, Fishes, 1840, 46 (fasciatus—psittacimis). 
Haliperca Gill, Proc. Ac. Nat. Sci. Phila., 1862, 236, iu part (bivittatus=radiali8). 
Mentiperca Gill, Proc. Ac. Nat. Sci. Phila., 1862, 236 (luoiopercanus) . 
Pseudoserranus Klunziuger, Synopsis der Fische des Rothen Meeres, 687, 1870 (in part, not type, 
which is Variola louti). 
Serranellus Jordan, subgenus nova (scriha). 
Type. — Perea cabrilla Linnaeus. 
Etymology. — Serran, the French name of Serranus cabrilla and related species. 
The genus Serranus as defined in this paper contains numerous species, mostly of 
the New World, and representing a considerable variety of forms. 
To this genus, however, belong but a small portion of the species called Serranus 
by Gunther, and the writers who have followed his arrangement, in which nearly all 
the Epinephelinm are referred to this very different genus. On the other hand, most 
of the species called Centropristis by these authors are either near allies of Serranus 
cabrilla, or else members of the very different subfamily Lutjanince. Few European 
