ICHTHYOLOGY. 57 



A. Salmo Fario or the common Trout, is well 

 known to delight in clear and gravelly streams, and 

 is found in most parts of Europe ; its usual length 

 is about fifteen inches, but some grow to a much 

 greater size ; the colour is yellowish grey, with 

 bright red spots ; it feeds on small fish and insects, 

 and is particularly fond of the May -fly, after which 

 it will frequently leap out of the water. 



Q. What is the Salmulus ? 



A. The Salmo Salmulus, or Samlet, is a small 

 species, thought by some to be the fry of the com- 

 mon salmon, but this is a mistake ; it resembles 

 the salmon in shape, but seldom exceeds eight 

 inches in length ; it is common in Scotland, where 

 it is called the Parr ; and in the river Wye under 

 the name of Skirling or Laspring. 



Q. What is the Salvelinus ? 



A. Salmo Salvelinus, or Salvelin Trout, is 

 usually about twelve inches long, rather more 

 slender in proportion than the salmon, and of a 

 brownish blue colour, with red spots ; the belly 

 orange colour j it is delicate food, and is found in 

 the lakes of Germany and of Siberia. 



Q. Describe the Eperlanus, 



A. Salmo Eperlanus, or the Smelt, is usually 

 about si* inches long, and is a very elegant fish, 

 almost transparent ; its back of a greenish white, 



Fry, $. young offish. 



