RED-EYE. 363 



nose and the anterior edge of the orbit ; the nape and 

 back rise suddenly, the whole dorsal line very convex ; 

 the fleshy portion of the tail narrow ; abdominal line also 

 very convex, the depth of the body decreasing suddenly 

 from the commencement of the anal fin. The scales large ; 

 the number in the series forming the lateral line about 

 forty, in an oblique line ascending to the dorsal fin seven, 

 and descending to the line of the ventral fin four; the 

 scales having numerous concentric strise, and two or three 

 radiating lines. The dorsal fin is placed very far back ; 

 the first ray arises half-way between the point of the nose 

 and the end of the short central caudal rays ; the base 

 of the whole dorsal fin over the space between the ven- 

 tral and anal fins; the base of the dorsal fin equal to 

 the length of the sixth ray.. From the point of the nose 

 to the commencement of the pectoral fin, from thence 

 to the origin of the ventral fin, and thence to the anal 

 aperture, are three very nearly equal distances ; the anal 

 fin commences in a vertical line but little behind the 

 origin of the last ray of the dorsal fin, the base of the 

 fin equal to the length of the second or longest ray ; 

 the caudal rays rather long, the longest as long again 

 as the central short rays. The fin-rays in number are 



D. 10 : P. 15 : V. 9 : A. 13 : C. 19. 



The Irish specimens of Rudd from Lough Neagh had 

 one ray more in the dorsal and anal fins. 



The irides are orange red ; the cheeks and gill-covers 

 golden yellow ; upper part of the back brown, tinged 

 with green and blue ; the sides more pale ; the belly light 

 golden yellow ; the whole surface of the body tinged with 

 a brilliant reddish golden hue, varying when viewed in 

 different positions in reference to the light, which it is 



