193 



ASPRO. 



In dividing the extensive family of Lirmoean Perches, Cuvier forms 

 the genus Aspro, which, with a somewhat elongated body, has the two 

 dorsal fins separate, the ventrals broad, the teeth very small and thickly 

 set, head depressed. The teeth are on the palatine bones, but not on 

 the tongue. 



RUFF. 



POPE. 



JACK RUFF. 



Perca fluviatiUs minor, and Schrollus, 

 " cernua, 



Cernua fluviatiUs, Aspredo, Riiffa, 



" fluviatiUs, 

 Acerina vulgaris, 



Jonston. 



LlNNJEUS. BLOCII; pi. 53. 



Donovan; pi. 39. 

 Jenyns; Manual, p. 334. 

 Willoughby; p. 331, tab. x. 14. 

 Fleming; Br. Animals, p. 212. 

 Cuvier. G-unther; Catalogue 



Br. Museum, vol. i, p. 72. 

 Yarrell; British Fishes, vol. i, 



p. 17. 



This little fish is less widely distributed than the Perch, 

 but it is common in the rivers of the midland counties of 

 England, although not found in Cornwall and Devon, in 

 Scotland, or the Isle of Wight. It is not mentioned by Mr. 

 Thompson among the fishes of Ireland; but by Linnaeus and 

 other continental writers it is said to inhabit the lakes of (at 

 least the northern parts of) Europe. According to Professor 

 Nilsson it is frequently met with in the middle and northern 

 waters of Scandinavia, but is rare in the south. It is lively in 

 its motions, and chiefly frequents those portions of the river that 

 are rocky or strewed with stones and sand. In other respects 

 it has much the same habits as the Perch, and is angled for 

 VOL. I. 2 F 



