372 



THE ANGLER-NATURALIST. 



scribed, and they are stated to be seldom seen of larger 

 size, — thus differing in a most important particular from the 

 three other British species of Coregonus, which moreover 

 in every case have the upper jaw longer than the under, 

 whilst in the Vendace the lower jaw projects considerably 

 beyond the upper. Its food consists of minute aquatic 

 insects, distinguishable only under a povrerful microscope, 

 the magnified forms of the two most common of which, in 

 two points of view, are shown in the vignette. 



Characteristics of the Vendace. — Length of head, compared to body as 

 2 to 7. Depth of body at commencement of hack-fin nearly equal to 

 one-fourth the length of body without reckoning tail. Lateral line 

 straight along middle of side, with six rows of scales in an oblique line 

 between it smd back-fin, and the same number below between the line 

 and the ventral axillary scale. Two back-fins ; the first commencing 

 halfway between nose and base of tail-fin, on upper side. All the 

 fins large; tail deeply forked. Mouth small, with square opening. 

 Under jaw slightly projecting. A few very minute teeth on tongue 

 only. Colour : upper parts of body and back-fin a delicate greenish 

 brown, shading gradually towards belly into a clear silver ; lower fins 

 all bluish white. Vertebrse 52. 



Fin-rays: D. 11: P. 16: V. 11: A. 15: C. 19. 



LYNCEUS. 



CYCLOPS. 



