SALMO. ANALOGIES OF THE SUB-GENERA. 251 



On placing these two groups together^ we shall get the 

 following mutual resemblances : — 



Sub-genera ^ , ■ , m, j Sub-families of the 



ofSlLMO. ? Analogical Characters. Salmonidce. 



Salmo. The pre-eminent type of the Salmonin^. 



Coregonus. Teeth very small or none ; mouth small Clupein^. 

 Mallotus. Pectoral fins rounded. CYPEiNiE. 



Anastomus. [ ^^^|ry'sm^a'lf "'"'^ ' "°"''' *^™^""^'] Mokmyrin^ 



rHead flattened; 'mouth very large jt 

 Laurida. < teeth long, sharp, slender, exceed- ^EsociNiE. 

 C ingly numerous. 3 



Our restricting the typical salmon to those with large 

 mouths and numerous teeth, makes them representatives 

 of the whole family, so that nothing further need be 

 said in confirmation of the first analogy. The small 

 mouth, never cleft beyond the eyes, with the scales 

 much larger than in the true salmon — setting aside the 

 general appearance of the fish — renders Coregonus a per- 

 feet representation of the Clupeince, or herrings : hence 

 the specific name of Clupeo'ides, given by Pallas to one 

 of the species. Again, Mr. Yarrell observes, the ap- 

 pearance of the gwyniad (^Coregonus /era) " is not unlike 

 a herring. Indeed, the common people of the lakes 

 where this fish is found, call them the freshwater her- 

 ring, and preserve them in the same manner, with salt.'* 

 Facts like these are always valuable; for there must 

 always be something real in resemblances that have ac- 

 quired popular credence. A rounded pectoral fin is as 

 prevalent among the carps (^Cyprince) as a pointed one 

 is characteristic of the salmon : we may therefore com- 

 pare Mallotus with the carps, for it is nearly the only 

 salmon * possessing this analogical character. There 

 may, indeed, be some doubts on this analogy; but there 

 can be none with regard to the next, or that between 

 Anastomus and Mormyrus ; for the former has quite the 

 incipient trumpet-shaped snout of the latter, while in 



* The parr or samlet [Salmo Salmulus), so ably determined as a distinct 

 species by Mr. Yarrell, is represented, indeed, with rounded pectorals; but 

 as no mention is made of this unusual deviation in the description, some 

 uncertainty hangs on the subject. I have never seen this fish. See Yarr. 

 Brit Fishes, vol. ii. p. 42. 



