54. PKRciLiA. 255 



tf^r ^'T^'^ l^' ^^^^ ' *^' ^^"^^t^^ «f the eye is one-sixth of the 

 hill ^^^*^^^^t«^« °f tbe pra^opemdum visible on the inferio? 

 hmb only; opercn urn Mith two feeble spines; sub- and interom 



'^TrrTfn^r'-- ^'^^ ^-^^ ^-'«Pi- longest. 0^^ 



uniform. (Cmv.) 



Port Western (New HoUand). 



53. EURO. 



Huro, Cuv. <5- Val. ii. p. 124 ; Richards. Faun. B<yr. Amer. Fishes, p. 4 



ISlx branchiostegals. All the teeth viUiform, without canines • 

 palatine bones ? ; tongue ? Two dorsals, the first with sL thT^nal 

 fin with three spmes. No denticulations on the bones of the head 

 opercaUiun with two flat obtuse points. Scales moderate ' 



Lake iiiu'on. 



1. Huro nigricans. 



Cuv. Regne Anim.-. Cuv. & Val ii r. 191 ,-.1 17. t> i j -r^ 



^- ^ 1 1^- ^- iT- ^- lat. 60-65. 



^+1,5'''^J^''^ ^^^MJ' ^l^^l t° one-third of the total length, excluding 

 he caudal ; cleft of the mouth obHquely nmning upwards toward! 



unif^r'' '' *'' '"■^'^^'^- ''^^ ^^'^^*^y noih^d. CoSn 

 Lake Huron. (Black Bass.) 



H 54. FERCILIA. 



H ^''^f^V^''7^'' ^•«'^- ^^«^/- ]^at. Sc. Philacl vii. 1854, p. 197 and 

 H U.S. Naval Astron. Exped. to the Southern Hemisph. Zoll. p 235 



^ Five or six branchiostegals. Maxillary teeth small conical with 



:::iy"rirsv"^' "°^%, ^^^'^^°-^^«' ^-^tedTtL^ba ; 



witLnf *^''*.'^^t^ ^"?o spmes, the anal with three. Operculum 

 Rio de Maypu. 



1. Perciiia giUissii. 



Girard, I. c. pi. 29. f. 5-9. 



I>-9|11. A.|. L.lat.35. 

 vertk^Tfr'om'tVr^'"-'"^'^' '^' "^P^^' "^^^i^ary reaching to the 

 Rio de Maypu. 



