76 PEECID-'E. 



on the under margin. Lateral line? Cneca? First dorsal with 

 three rows of large round black spots, the second with four streaks 

 of the same colour. 

 Canada (Quebec). 



6. Lucioperca grisea. 



Dehay, Neiv York Fauna, Fishes, p. 19. 



D.14|^. A.^. 



Operculum with an acute spine behind, above and beneath which 

 is a veiy small one ; crown partly, operculum, prte- and suboper- 

 ciiliun entii-ely covered with scales ; 105 transverse rows of scales ; 

 seven cteca pylorica. All the fins black-spotted. 



Fresh waters of the Northern parts of the United States. 



a. Adult. Ohio. From Mr. Frank's Collection as Ferca americana. 



b. Intestines of the same. 



c. Adult : skin. Ohio. From Dr. ParneU's Collection. 



12. PILEOMA. 



Pileoma, Dekay, New York Fauna, Fishes, p. 10. 



Six branchiostcgals. iUl the teeth minute, viUitbrm, without 

 canines ; teeth on the palatines and on the vomer. Operculum with 

 a spine, prajopercuhim entire. Two separate dorsals, the first with 

 fourteen or fifteen spines ; spines of the anal indistinct. Scales of 

 moderate or rather small size. No air-bladder. 



Fresh waters of North America. 



1. Pileoma semifasciattim. 



PUeoma semifasciata, Dekay, I. c. pi. oO. f. 1G2. 

 ? zebra, Ayass. Lake Super, p. 308. pi. 4. f. 4. 



D. 14 I 15-lG. A. 10. 



The height of the body is one-sixth of the total length, the length 

 of the head one-fifth ; the interspace between the eyes is nearly as 

 broad as theu- diameter long. Body with narrow black cross-bars, 

 alternately longer and shorter. 



a, h. Adult : skins. Lake Erie. From Dr. ParneU's Collection. 

 c. Adult: skins. Ohio Canal. From Dr. ParneU's Collection. 



2. PUeoma carbonarimn. 



Baird 8,- Girard, Proc. Ac. Nat. Sc. Philad. 18.j3, p. 387. 

 D. 15 I 13. A. 11. 



The length of the head one-fifth of the total. Body with trans- 

 verse bars of black ; a black spot at the base of the caudal, the 

 latter l)arrcd ; base of dorsals, anal, and ventrals black. (/>. 4" G.) 



Bio Salado (Texas). 



