Ill tlic Potomac River noar its nioutli, in Slncinixcnt l^)ay, 

 and in the sontliorn part of Cliesapcaki^ P>ay: not rar(\ 



Ac'Ali. ("ohl,. 



CAEAXGrS,, ((iirard, Gill.) 



('. HTPPOS. 



The Horse Crcvalie', or Soiitlioi'ii Caraii, 



Fonn elliptical, much compressed; leniilh of the liead to 

 tlie total leni^th as two to nine; scales small, extendiuii; ovei' 

 the gill-covers, and high np nn the base of the vertical fins: 

 the lateral line is furnished on its straight })ortion with twenty- 

 fire bony plates, commencing small at first, hut lieconiing more 

 elevated, ending in sharj) three-sided spines. In front of the 

 first dorsal fin, which is I'tceived \n a furrow, is a short spine, 

 directed forwards, and nearly concealed in the skin. Caudal 

 fin deeply forked. The hack is bluish; golden ycdlow on 

 the sides; ventrals, anal and caudal fine vellow, the latter witli 

 dusky tij)s: chin satin-white; a dark round spot on the front 

 margin of the opercle; another on the inner base of the ])ecto- 

 ral, and occasionally a short black vert!</al bar acr-iss the 

 middle of the ])ectoral fin. 



Fin-rays:— 1). 7. 1, 2t): P. :>(); \'. I . ;.: A. 2. 1 V: C ID.:; 



jScoiithc/- Ju'ppos, L. Jjyst. Nat. I, p. 4".)4. 



('. defensor, DeKav. Xew Vork Fauna, Fishes, j). PJ<b pi, 

 24, fig. 72. 



Enters Chesa})eake P)ay, l)ut is very rarely lirought to the 

 P)altimore markets. 



A CAT). Coll. 



TRACHYNOTUS. (Lacep.) Cnv. A- Val 

 T. c.AROLixrs. 



Fompano Crevallc. 



Similar in sliajie to tiie preceding. The hrst <lorsal lin is 

 represented by six short spines, each with a short membrane, 

 and preceded by a spine directed torward : th(^ second dorsal 

 and the anal fin Avitli tlieir first rays jd'olonged. The 

 fac(i abruptly cut nfi' bef(M-e tln^ eyes. 

 15 



