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28 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. © 
SCLENIDZE. 
23. Cynoscion magdalenz (Steindachner) Jor. & Gilb. 
Common in the bay of San Diego. 
24. Menticirrus elongatus (Giinther) Gill. 
A large species of Menticirrus, probably Umbrina elongata of Giinther, 
is taken occasionally in the bay. We have obtained one specimen. 
25. Corvina saturna (Girard) Steindachner. 
Not uncommon. 
26. Roncador stearnsi (Steindachner) Jor. & Gilb. (gen. nov.). 
Common. This species, having a serrated preopercle and only villiform 
teeth in either jaw, is not a Corvina as that genus is understood by many 
recent writers. Its relations are rather with Scicnops ocellatus, with which 
it is, however, hardly congeneric. We propose to consider it as the type 
of a distinct genus or subgenus, for which the name FRoncador, applied 
to it by the Italian fishermen, may be adopted. This word appears also 
in the Latin name of a related species, Umbrina ronchus. 
Roncador, gen. nov. Allied to Corvina and Scicenops. 
Body moderately elongated, the head deep, the profile declivous, lower 
jaw included; both jaws with a broad band of villiform teeth only; no 
enlarged teeth or canines; pseudobranchie present; preopercle strongly 
and evenly dentate posteriorly, entire below; spines strong, the second 
of the anal very robust, but not very long; caudal fin lunate, air-blad- 
der large. 
This species, Roncudor stearnsi, is as readily distinguished by the black 
pectoral spot as its relative, Scienops ocellatus, is by the black spot on 
the caudal. 
EMBIOTOCID. 
27. Embiotoca jacksoni Ag. 
Common. 
28. Amphistichus argenteus Ag. 
- Occasional. 
29. Ditrema furcatum (Grd.) Giinther. 
Common. 
30. Hyperprosopon arcuatum Gibbons. 
Not uncommon. 
Sl. Cymatogaster aggregatus Gibbons. 
Very abundant. 
32. Abcona minima (Gibbons) Gill. 
Occasional. 
