* 
234 PENELOPE, PETROMYZA. 
2—4. Prnetore. Spec. 4. 
eristata, (guan, curassow,) head with an erect 
crest ; temples violet. 
See MS. P. 
43—2. PennatTuLa. Spec. 18. 
phosphorea, (shining sea-pen,) stem fleshy, with a 
rough midrib and imbricate ramifications. 
See MS. P: 
4—3, Perca. Spec. 60. 
Section A. Dorsal fins two, distinct. 
fiuviatilis, (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 fin 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 tong. 
nobilis, body silvery, with eight brown bands. 
Section C. Dorsal fin single ; tail forked. 
cernud, (ruffe,) dorsal fin 27-rayed, spines 15. 6 
inches long. | 
aigra, (black-fish,) body narrow, with smallscales. 
45 inches long. 
See MS. P. 
4—6. Prtromyza. Spec. 4. 
marinus, (sea-lamprey,) mouth papillose within + 
