141 



peai siion after doath. TTead with greonlsli luetaliic ret^ec- 

 rions; sides of flie liead yellow is)i. A darl: pnr)»lis1i spot at 

 the ])ase of tlie jiectoi'al tins; al)d(imen ]tearl-grey. 



Fin-rays:—]). 4. S: 1'. Ki: Y. 1. .V. A. :;. S: ('. 12]. 

 M. Uneaf/i^, (Mitch.) Civv. .V Val., XJ. v. 'JC: DcKiiy, Xew 

 York Fann., Fisli.. p. 141, |»1. I,"'). Jij;-. 42. 



Of rare oeeiirreiice in our iiijirkets, and no douLt lu'oiielit 

 from tlie salt wateis of ( 'lifsa]ieake l^ay. 



S. I. 



XI..— GA8TEK08TEID.^:. 



APELTJ'^S, (l)eKay,) P.rev. 

 A. giArtiiAcrs. 



'l'h(3 Foiir-Spincd Sliekle-Baek. 



])ody fiLsifoiau, coui])res.sed, hig'liest oj)positethe tij'st dorsal 

 spine; ])ack arclied; tail exceedingly slender. Head smail. 

 lu front of tlie dorsal tin aie three, and occasionally ionr 

 movable spines, with a small membrane attfiched to each, all 

 lying in a groove. Yentrals reduced, to a single, stout, tri- 

 angular spine, serrated on its front edge. Anal iin with a 

 shar]), recurved spine. Olive-green, marbled with dusky 

 above: whitish ])eneath. 



Fin-rays:— D. :; oj' 4. 4. 12: P. 12: \'. 1: A. 1. It); 0. l:!. 



A. </>f<i(l/'iicif,s, Mitch. Trans. Lit. cV' I'hil. >Soc., I. ]>. 4o(), 

 pi. 1, Hg. 44 (bad): (^iv. A Yal., 411. p. r.04: DcKay, New 

 Vork Faun., Fish. pi. f», hg. 48. 



— apeltes, Cuv. & Ya]., 4Y. p. 505: Storer, lleport, p. ol. 



This lisii runs in the Patapsco lliver some distance beyond 

 tide^ and no doubt seeks the inlets, v^hcre it inay build its 

 nest in the matted foliage of the Myriophyllum. 



Its particular range has not yet l>een determined. 



A(JA1>. Col-L. 



