PISHES. 527 



I infer from the fact, that they both ascend the river at the 

 same time,, and yet we never see the slightest signs of a 

 transition form from one to the other, but we can always 

 with the greatest ease, distinguish them; and, moreover, 

 both retain their characters as distinct species even during 

 the spawning season." 



Lloyd, who gives an excellent engraving of this fish in 

 his " Scandinavian Adventures," from a male weighing up- 

 wards of 30 lb., and measuring 42 in. in length, says : 

 Cf Many of these fish remain in the river Grotha all the year 

 round, but by far the greater portion, when the spring was 

 pretty well advanced, left us for the Wener, where they 

 passed the summer, and it was not until the fall of the year 

 that they again revisited our rapids for the purpose of spawn- 

 ing. They spawn in the end of October or November, but 

 long prior to this period, generally in the month of August, 

 they fell down from the lake into the upper part of the 

 river. The first batch consisted mostly of males, and it was 

 not until some little time afterwards that any considerable 

 number of the females joined company. When the spawn- 

 ing was over, the fish either headed back into the Wener 

 or retired to the deep pools in the Gotha, where they re- 

 mained during the winter to recruit their strength. The 

 males, on an average, are nearly a third larger than the 

 females. I have not unfrequently captured males of 30 lb. 

 and upwards, whereas the females seldom, exceed 20 lb." 



Description of a fresh-caught Wenems lax (S. ferox), 

 which I saw at Mr. Lloyd's house, in Wener sborg, July 

 5th, 1863. It was a male fish of 30 lb., caught by spinning. 

 Its length was 3 ft. j depth under the first dorsal fin 8 in. ; 

 tail 7 in. across, nearly even at the edge ; upper maxillary 

 extended !-[- inch beyond the back of the eye when the 

 mouth was closed. The spots were round, not cruciform, as 

 in the " silfver lax ;" the shape of the scales different ; eye 

 about 1 in. across both ways ; not a red spot on this fish. 



On remarking the great resemblance between this fish 

 and the 8. eriox, L., or bull trout, Lloyd hazards an opinion 

 whether it may not be identical with that fish, though 



