SCIENTIFIC SURVEY. 



115 



Sdb-class Teleostei. Salmonoidje. 



when seen from above, the fish appears entirely blue ; hence the 

 name Blue hack given to it by the settlers of that neighborhood. 



" The sides and abdomen are silvery white in the female, and of a 

 deep reddish orange in the male, spotted in both sexes with orange 

 of the same hue as the abdomen. The dorsal and caudal fins are 

 brownish blue, bordered with pale orange in the male, the pecto- 

 rals, ventrals and anal of a fiery orange, blackish blue at their base, 

 with their margin of the purest white. 



" When just taken out of the water it is impossible to imagine 

 anything more beautiful and more delicate in the way of coloration 

 in fishes of the temperate zone. 



" The abode of the Blue back is, as stated above, the Moosilla- 

 maguntic Lake, in which it is concealed during the greatest part of 

 the year, but about the 10th of October, it comes near shore and 

 ascends in schools the Kennebago for the purpose of spawning. 

 Half a mile above its mouth the Kennebago receives tlie outlet of 

 Oquassa(Rangely Lake,) the trout there leaves the Kennebago to 

 the left and runs toward Oquassa Lake where its voyage comes to 

 a close.* After the middle of November it goes back into Moosil- 

 lamaguntic Lake and is seen no more until next year. 



" The flesh of this fish is highly flavored, and more delicate than 

 that of the brook trouts in Europe and America. It resembles 

 that of Salmo umbla of the Swiss lakes, both in the peculiarity of 

 its habits and its delicacy. 



" Sahno umbla is a lake trout, an inhabitant of the deep, making 

 its appearance near shores in January and February, to spawn, 

 and never ascending the brooks or rivers, tributaries of these 

 lakes." 



Salmo Gloveri, Girard. 



Union River Trout. 



The following description of a species of trout, considered by 



Dr. Girard as a new one, caught in Union river in this State, is 



copied from the Proceedings of the Philadelphia Academy of Arts 



and Sciences for 1855, page 55 : 



Body of the male is subfusiform and rather slender, particularly 



♦This is not correct. Prof. Hitchcock who was in that region last fall, informs 

 me that they go through Rangely Lake and up the Sandy river some distance. 



