FISHES OF CHESAPEAKE BAY 
261 
3.25 to 3.75; mouth large, terminal, slightly oblique; maxillary reaching about middle of eye, 1.8 to 
2.1 in head; teeth in jaws in villiform bands, the outer ones enlarged; preopercle finely serrate; 
gill rakers rather short and slender, 13 to 15 on lower limb of first arch; scales moderate, ctenoid, 
six rows between origin of dorsal and lateral line; vertical fins densely scaled; dorsal fin long, low; 
caudal fin forked; pectoral fins rather short, 1.3 to 1.4 in head. 
Color brownish or grayish above, silvery below; sides with two yellow stripes (most distinct in 
young); base of caudal with a large black spot; dorsal and caudal dusky, other fins mostly yellow. 
This fish was not taken during the present investigation. It is known from the Chesapeake 
only from a record by Uhler and Lugger (1876). It is common at Charleston, S. C., and southward. 
A maximum weight of 1 pound is reported. 
Habitat . — Virginia to Trinidad, occurring only as a straggler north of the coast of South 
Carolina. 
Chesapeake localities. — (a) Previous records: “Occurs occasionally in the lower part of the 
Chesapeake Bay” (Uhler and Lugger, 1876). ( b ) Specimens in collection: None. 
Family LXVI.SPARID/E. The porgies 
Body oblong or ovate, usually notably compressed; back more or less elevated; mouth rather 
small, nearly or quite horizontal; premaxillaries little protractile; maxillary slipping under pre- 
orbital for most of its length; supplemental bone present; preorbital usually broad; teeth strong, 
those on anterior part of jaws frequently incisorlike, lateral teeth blunt molars, none on vomer or 
palatines; gills 4, a slit behind the fourth; gill membranes separate, free from isthmus; opercle 
without spines; lateral line complete, not extending on caudal fin, concurrent with outline of back; 
scales moderate, firm, finely serrate; dorsal fin long, continuous or notched, with 10 to 12 spines, 
depressible in a groove; caudal fin usually forked; anal fin with three spines, the soft part similar 
to that of dorsal; ventral fins subthoracic, with I, 5 rays. 
KEY TO THE GENERA 
a. Front teeth very narrow, not notched; dorsal spines rather high, slender, the second one more 
than half the length of head Stenotomus, p. 261 
aa. Front teeth broad, with or without a notch; dorsal spines shorter, the second less than half the 
length of head. 
b * Body with dark crossbars. 
c. Incisor teeth deeply notched; size small Lagodon, p. 265 
cc. Incisor teeth entire or only slightly notched; size large Archosargus, p. 267 
bb. Body without dark crossbars; black spot on caudal peduncle; incisor teeth broad, not notched 
Diplodus, p. 268 
113. Genus STENOTOMUS Gill. The scups 
Body rather deep; back elevated; head pointed; eye small, placed high; incisor teeth rather 
narrow, not notched; gill rakers short, about nine on lower limb of first arch; top of head, snout, and 
orbital region naked, the rest of body scaly; antrorse dorsal spine present, attached to interneural 
bone by a long process; dorsal with 12 spines, the first less than half the length of the second. 
Two apparently closely related species are known, and both were taken in Chesapeake Bay. A key 
to the species is omitted because it is difficult to show specific differences briefly. The two species 
are compared and contrasted under Stenotomus aculeatus. 
144. Stenotomus chrysops (Linnaeus). Scup; Porgy; “Maiden”; “Fair maid”; “Ironsides.” 
Spams chrysops Linnaeus, Syst. Nat., ed. XII, 1766, p. 471; Charleston, S. C. 
Stenotomus aryyrops Uhler and Lugger, 1876, ed. I, p. 122; ed. II, p. 104. 
Stenotomus chrysops Bean, 1891, p. SO; Jordan and Evermann, 1896-1900, p. 1346, PI. CCXI, fig. 544. 
Head 2.95 to 3.45; depth 1.95 to 2.25; D. XII, 12; A. Ill, 11 or 12; scales 49 or 50. Body 
rather deep, compressed; back elevated, reaching its highest point under anterior dorsal spines; 
dorsal profile straight to slightly concave over eyes, convex elsewhere to caudal peduncle; depth of 
caudal peduncle 2.55 to 3.6 in head; head rather short, deep; snout more or less pointed, 2.3 to 2.55 
