iy-1 



J.XX.— SPIXACID.E. 



S(,)UALUS. Artedi. 



S. A.MKH1(•A^•^^. 



The I^ieked Dog-Fii^h. 



tjqualus ameriaanu.s, .Mitchill, Phil. &: Lit. Trans. New 

 York, I p. 483; DvjKay, Xetv York Faima, Fishe.s, ]>. Hr>6: 

 Storer, Bost. Journ. Nat. Hi.st. 1844, IV p. 188. 



— /nac/'iHlus. Mitchill, Am. Monthl. Mau". 11. 1818. )>. 

 328. 



Odonfa^pis (iincric(fnii.s, Abbott, Proc. Ac. Xar. fSc. Phila«l. 

 18(Jl, p. 89U. 



Occasional near the month of C"hesa|)eake P>ay and in t'ne 

 ocean adjacent. 



I .XXI.— PETROM YZONTID.E. 



PETHOMVZON. Artcdi. 

 r. AMinucAxrs. 



The Aiuei'ieaii Sea-L:iiu})r('y or Luniprev -Ki'l. 



Bhiish brown, inoftled with black olive-gret-n, wliich i.s 

 the general color along the back; boneatli .silvery grey; tirst 

 dorsal fin greenish; tlie second reddish: tail tlark brown. 



Body cylin<lriQal anteriorly, compressed posteriorly, and 

 terminating in an acnte tip: a sligjit keel upon the back. — 

 Head depressed, and when the month is closed, obtnsely conic: 

 a singnlar tnbnlar orifice eqnidistant from, and slightly an- 

 terior to the eyes. Month forming a longitndinal fissnre, 

 and when attached to any (tliject assnmes the form of a regn- 

 lar circle. Toeth of varinns kinds, wliicji may be considered 

 as disposed in concentric circles ah.)nt a common Cfntre: in 

 the throat, and partly t-losing it. are thivH' large teotli. 



