360 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Togue, a third row of teeth is frequently observed on the center of the 

 tongue, where sometimes one or two may be met with in the adult. 



The fins vary considerably. By compounding many notes taken at 

 ditferent times from a large number of specimens, and striking an aver- 

 age, I found that the same discrepancies are applicable to the three 

 American lake trouts.* 



The adipose tin is club-shaped in the Togue and Namaycush, and, as 

 before stated, not so long and slender as in the Siscowet. The specimen 

 represented in page 235 1 was a very fine Togue, cai)tured during the 

 spawning season in the Toledi Lakes, Upper Saint John. It displays the 

 powerful ijroportions of the fish at this time of the year, which are very 

 different to what obtain subsequently when fecundation has taken place. 

 The scales of this species, and seemingly of the other two, are small and 

 elliptical, decreasing in size from above downward. I counted in 

 :wo instances 132 along the lateral line, which some authorities state 

 takeS'its origin at the upper angle of the operculum; but this statement, 

 made, I believe, originally by Dekay, is incorrect in the case of the 

 Togue, and it would appear, also, in the other two. The line commences 

 at the upper third of the operculum and curves slightly down- 

 ward until beyond the pectoral flu, when it runs straight for the tail. 

 The latter, although furcate in the old, is by no means so in younger 

 individuals. There is often an abnormal thickening or enlargement of 

 the lower caudal lobe, which I have seen in several instances, and the 

 same has been noticed by other observers. It is met with in bx)th 

 sexes, but whether congenital or induced I cannot say ; it may have 

 originated from the friction in digging the sand for the deposition of 

 the ova. I counted 130 pyloric cseca and 62 vertebra? | in twcf females 

 of the Togue. 



The Togue abounds in the great lakes at the sources of the Saint 

 Croix and Saint John Rivers, deriving one of its local names from the 

 Toledi Lake, where, and in Lake Temiscouata, it is extremely plentiful. 

 Dr. Gilpin, of Halifax, seems to have been the first to proclaim its 

 presence in Nova Scotia. According to Dekay, it is common in the 

 lakes of New England, where Europeans give it a variety of names ; its 

 western aud northern extension, however, is imperfectly noted. I am 

 unaware of the Namaycush and Togue having been met with in the 

 same waters. The partiality of the latter for certain lakes, or at all 

 events its seeming absence from others to all appearance better adapted 

 to its habits, may be more apparent than real, seeing that, like non- 



* Thus iu the Namaycush, Siscowet, and Togue, the fin-rays are as follows : Gill- 

 rays, 12-13 ; D, 12-14 ; P, 12-14 ; A, 11-13 ; V, 9-10 ; C, 19^. 



t " Illustration of the togue or grey-spotted trout of the lakes." Field and Forest 

 Rambles. 



t Holmes, in the Maine Agricultural and Scientific Report, 1862, j). 110, gives 113 

 csecal appendages and 65 vertebra?, which, unless it is a mistakCj shows considerable 

 irregularity in the numerical proportions of the former. 



