424 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
transportation and exposure to the air. It reaches a weight of 30 to 40 pounds. The 
largest one ever reported, according to Goode, was taken at Orleans, Massachu- 
setts, and weighed 112 pounds. 
The synonymy of the species admits of little doubt. It has been thought by some, 
the writers among the number, that the Scicena Uneata of Bloch was intended for 
Dicentrarchus lahrax rather than for the present species. This opinion was based 
on the large size of the lower serrse on the preopercle as shown in Bloch’s figure. 
A later recomparisou has convinced us that this species is really Bloch’s Uneata. 
It should therefore retain the name Uneatus rather than the later septentrionalis. 
Our specimens of Boccus Uneatus are from Wood’s Holl, Massachusetts ; New York ; 
Washington; and Pensacola, Florida. There is no doubt of its frequent occurrence 
in the Escambia River near Pensacola, and that the account given by Stearns (Nat. 
Hist. Aquat. Anim., 425) really b( longs to this species. 
Genus XXXII.— DICENTRARCHUS. 
Labrax Klein, Missus, V, 25, 1749 (non-binomial). 
Labrax Cuvier, Ebgue Animal, Ed. 2, 1829 {hipus = ldbrax) {not Labrax'PaX\.a,s, 1810 = Hexagrammus 
Steller.) 
Dicentrarchus Gill, Proc. Ac. Nat. Sci. Pbila., 1860, 111 {elongatus = lahrax). 
Type. — Perea elongata Geoffroy P. lahrax L. 
Etymology. — di'?, two; xivrpov^ spine; dpx6<;, anus, the typical species being wrongly 
described as having two anal spines. 
All the European and American species of the Latince (Labracince) have been 
usually referred to a single genus, for which the oldest binomial name is that of Morone. 
This genus was based originally on three species, erroneously supposed by Mitchill to 
differ from the genus Perea in having the ventral fins abdominal. These species are 
those now known as Morone atnericana, Perea flavescens and Lepomis gibbosus. The 
name has been newly defined by Dr. Gill and restricted to the first of these species, 
and according to current rules it has priority over all the other names applied to this 
group. The name Labrax is inadmissible in any event, unless the early names of 
Klein be admitted, because it has been previously used for a genus of fishes in anot her 
family. 
Dr. Gill has taken the three principal groups or subgenera of Morone (called 
by us Morone, Boccus, and Dicentrarchus) as distinct genera. These groups are readily 
defined, but the actual differences are small. It is most convenient, on the whole, to 
regard them as distinct genera, at least for the purposes of the present paper. 
The laws of priority render it necessary to retain for the European species the 
inappropriate name oi Dicentrarchus. 
ANALYSIS OF SPECIES OF DICENTRARCHUS. 
Common Characters: Lower margin of preopercle with about three strong antrorse spines; supra- 
occipital crest broadened at its upper margin with a median groove ; interorbital region 
broader and flatter than in the preceding ; teeth on tongue in three long patches, one in the 
middle and one on each side ; dorsals separate ; anal spines graduated ; dorsal spines slender; 
lower jaw slightly projecting;; body rather elongate, the depth less than one-third the length ; 
vertebrae 12 -J- 13 = 25 {lahrax). 
