72 



dusky transverse bars occur frequently. Length, 6 to 12 

 inches. 



Fin-rays :— D. 18.10; P. 15 ; A. 3.9 ; C. llf. 



Lahrus hurgall, Schoepf. in Schrift. Gesellsch. Naturf. 

 Frennde, YIII, p. 155. 



— chogsef, Mitch, in Trans. Lit. & Phil. Soc. N. Y. I, p. 402, 

 pi. 3. fig. 2. 



Chnolahrus chogsef, Cuv. & Yal. XIII. p. 237. 



— cceruhus, Storer, Synops. Fish. N. A. p. 134; DeKay, 

 New York Fish. p. 172, pi. 29, fig. 93. 



Not uncommon in the Atlantic coast of Worcester and ad- 

 joining counties. 



XXIVa-TRICHiaRIDS;. 



TKICHIUKUS, Linn. 

 T, lepturus. 



The Silvery Hair-Tail 



This fish has a long and compressed body, the tail tapering 

 very gradually to a fine point. The skin is smooth, silvery, 

 apparently without scales, and is easily detached. The green- 

 ish yellow lateral line arises on the upper part of the bran- 

 chial aperture, passes down behind the pectorals fin, descends 

 thence to the lower third of the body, and runs parallel and 

 near the edge of the abdomen to the extreme tip of tail. The 

 head is flattened between the eyes, and ridged on the 

 nape towards the dorsal fin. The eyes are large, circular, and 

 prominent, and less than their diameter apart. The larger 

 lower jaw has distant, acute teeth, of which the tvo anterior 

 are largest, extending outside of the tip of the upper jaw, 

 •when tha mouth is closed. The opercle ends in a point, ex- 

 tending beyond the base of the pectoral fin, and terminates 

 with its upper margin in a fibrous thread. The dorsal fin, 

 commencing above the upper angle of the gill-opening, is 

 slightly elevated in the middle, where it is nearly two inches 



