142 TELEOSTEI: ACANTHOPTERI. — XX. 
aa. Vertebre typically 10 + 14; second anal snine well developed. (Sci- 
enine.) 
az. Lower pharyngeals separate. 
y. Lower jaw without barbels. 
c. Teeth well developed, permanent in both jaws; lower pharyngeals 
narrow, with sharp teeth. 
d. Gill rakers slender, rather long; mouth oblique; A. inserted rather 
posteriorly; preorbital narrow; slits and pores of upper jaw little 
developed; preopercle serrate, its lowest spine enlarged, turned 
downward; head not very broad, not spongy above. 
BAIRDIELLA, 174. 
dd. Gill rakers rather short and thick; anal further forward; snout 
with large pores, and 2 to 4 slits on its edge; preorbital broad ; 
mouth inferior... . % Bei Ea ka ba cn Uae ee” "eta IAN A SI 
cc. Teeth very small, subequal, those in lower jaw lost with age; lower 
pharyngeals broad, with paved teeth; gill rakers short, but slender, 
otherwise as in Scare. a ot eee Lxsostomus, 176. 
yy. Lower jaw with one or more bar hele fotkeertrias essentially as in Sci- 
end). 
e. Lower jaw with several slender barbels at its rami; preopercle 
serrate... =. -s 7. » -Macroregem 477. 
ee. Lower jaw with one thickish barhel at its tip: no air-bladder; 
anal spine single; body long and low; preopercle crenulate. 
MENTICIRRHUS, 178. 
xx. Lower pharyngeals very large, completely united, with coarse paved teeth; 
snout, etc., as in Sciena. 
Jj. Lower jaw with numerous barbels along the rami; preopercle 
nearly entire. . . ° “so em, & Oe OGDMEAS, tg 
Sf. Lower jaw without barbalas sad vanes obscurely serrate. 
APLODINOTUS, 189. 
173. CYNOSCION Gill. (xiv, doz; cxiawa, sciena.) 
a. Soft dorsal and anal closely scaled. 
b. Back and sides nearly uniform silvery, without spots. 
387, C. nothus (Holbrook). Waite WrEAk-FisH. Body rather 
deep; snout short, bluntish; eye very large, 4 in head. Head 3}; 
depth 33. D. X-1,28. A.II,9. Scales 6-60-7. L.12. Va. 
to Fla. (Lat., spurious.) 
bb. Back and sides with irregular dark spots in undulating streaks. 
388. C. regalis (Bloch & Schneider). WeEAK-FISH. SQUE- 
TEAGUE. Silvery, brownish above, and with bright reflections; fins 
without distinct spots; snout sharp; eye moderate, 5 to 7 in head. 
Head 34; depth 41. D. X-1, 29. A. 1,13. Lat. 1.80. L. 25 
feet. Cape Cod to . Fla., an alundomt and most excellent food-fish. 
aa. Soft dorsal scaleless; back and upper fins with many conspicuous round 
black spots, 
889. C. nebulosus (Cuv. & Val.). Spottep WEAK-FISH. Sil- 
very, back bluish. Head 34; depth 5. D. X-1, 25. A, Law 
