234 PENELOPE, PETRQMYZA, 



2 4. PENELOPE. Spec. 4. 



cristata* (guan, curassow,) head with an erect 

 crest ; temples violet. 



See MS. P. 



13 2. PENNATULA. Spec. 18. 



phosphorea, (shining sea-pen,) stem fleshy, with a 

 rough midrib and imbricate ramifications. 



See MS. P. 



43. PERCA. Spec. 60. 



Section A. Dorsal ft ns two, distinct. 



jluviati/is, (river perch,) second dorsal fin with 16 



soft rays. Sometimes two feet long, 

 americanuS) (red perch,) red ; second dorsal fin 



with 13 rays. In brackish water. 

 labraX) (basse,) second dorsal fin with 14 rays : 



back dusky, tinged with blue ; belly white. 



Body shaped like a salmon. 



Section B. Dorsal Jin single ; tail undivided. 



marina, (sea perch,) red, with transverse dusky 

 lines on the sides ; gill-covers with a black 

 spot ; dorsal spines fifteen. A foot long. 



nobilis, body silvery, with eight brown bands. 



Section C. Dorsal fin single ; tail forked. 



cernua, (ruffe,) dorsal fin 27-rayed, spines 15; 6 



inches long. 

 nigra, (black* fish,) body narrow, with small scales, 



15 inches long. 



See MS. P. 



4 6. PETROMYZA. Spec. 4. 

 (sea-lamprey,) mouth papillose within j- 



