1. SALMO. 71 



Back greenish-brown, fading to brownish-white on the sides ; belly 

 blackish ; irregular black spots of about the size of two or three scales 

 are scattered on the sides ; a series of bright purple-coloured spots 

 runs along the lateral line, a few being scattered on the lower part 

 of the side ; there are several distinct black spots on the opereiduni, 

 and several series of elliptical ones on the dorsal fin and caudal fin ; 

 the other fins are immaculate, the anal blackish, the pectorals and 

 ventrals yellowish, tinged and margined with blackish. 



The state of the sexual organs shows that th-^ specimen was en- 

 gaged in propagating its species at the time of iapture. 



Description of a male overgrown Trout, taken in a small rivulet in 

 Shropshire in the month of April ; testicles very small, hand-like. 



inches. 



Total length 20 



Greatest depth of the body 3| 



Length of the head 5| 



Girth of the biggest part of the body 9^ 



Least depth of the tail 11 



Distance between end of snout and eye 2 



Diameter of the eye |- 



Length of the maxillary bono • 2|- 



Distance between eye and angle of prscoperculum . . 2 



Greatest width of operculum 1-1 



Greatest depth of operculum 1|^ 



Distance between occiput and origin of dorsal fin . . 5^ 



Distance between end of dorsal and root of caudal . . 5j'i^ 



Length of base of dorsal 2 



Greatest height of dorsal 2\ 



Length of pectoral 2f 



Distance between root of pectoral and root of ventral 5 



Length of ventral fin 2,\ 



Distance between root of ventral and origin of anal . . 3^ 



Length of anal If 



Greatest depth of anal 2i 



Length of longest caudal ray 2\ 



Length of middle caudal ray 1| 



The specimen is in a very lean condition, with the head of enor- 

 mous dimensions; the jaws exceedingly large and strong; and the 

 maxiUary bone strongly undulated, reaching far beyond the hinder 

 margin of the orbit. Although the sexual organs are very feebly deve- 

 loped, the skin on the back is extremely thick, covering the scales. 



The greatest depth of the body is below the origin of the dorsal 

 fin, and is two-ninths of the total length (caudal not included) ; the 

 length of the head is one-third of the same. Ihe snout is much 

 produced and pointed, and two-thirds the length of the postorbital 

 part of the head, or nearly three-fourths that of the maxillary bone. 

 The lower jaw projects considerably beyond the upper, being bent 

 upwards at the extremity, but no part of it is received between the 



