72 



THE AXGLEE-NATURALIST. 



in a point. Colouring of upper part of body and head generally, 

 light olive-brown, merging into a yellowish bro-mi on sides, growing 

 silvery white towards the belly ; back, back-fin, and taU spotted with 

 brovrai ; pectoral, ventral, and anal fins pale brown. 



Fin-rays: D. 14-1-12: P. 1.3: V. l-h5: A. 2+5 : C. 17. 



The vignette gives a magnified representation of the 

 Argulus foliaceus of Juxine, a parasite occasionally found 

 on Trout, Pike, and other fresh-Tvater fish. The figure on 

 the left represents the upper surface in a male, that on the 

 right the under surface in a female, and the smaU figure in 

 the centre the insect of the natui'al size. 



augulus foliaceus. 



