HISTORY OF THE ICHTHVOLOGY OF NEW BRUNSWICK. 43 



sub-fusiform, heavy anteriorly ; back slightly arched ; 

 head rather small, and mouth inferior and oblique rather 

 than terminal as in C.plumbeus ; snout descends abruptly. 

 Eye small, contained four times in the length of the head, 

 which latter is contained four-and-a-half times in the 

 body. Profile of head straightish, flattened on top, with 

 a slight medium depression. Dorsal inserted over last 

 ray of ventral, and like the anal has eight rays. The 

 scale formula is 11-64-8, varying slightly in different 

 individuals. Coloration : Above almost black, below 

 whitish, lateral band dusky. 



This fish spawns about the middle of June, when the 

 top of the head, and scales of the lateral and dorsal parts, 

 are beset with minute horny tubercles, rendering it 

 harsh to the touch. 



Loch Lomond is drained into the Bay of Fundy by 

 the Mispeck river, and has, therefore, no fresh-water 

 connection with the St. John or any other river system. 

 Hence this form is localized, confined, as it were, to a 

 very limited lacustrine area, and does not exhibit the 

 aberrant character of the last species. 



A single specimen of Couesius was taken from Spruce 

 Lake, St. John County, by the writer in September, 

 1893, which difl:ered in some particulars from either of 

 the two above-described, and is evidently the form re- 

 ported from Free Port, Maine, by W. C. Kendall and 

 Hugh M. Smith {vide liulletin U. S. F. Com., pp. 15-21, 

 1894). 



The body is fusiform, its depth being four and 

 three-quarter times in its length. Profile very much 

 arched. Head conic, convex on top, four and a quarter in 

 body. Mouth terminal. Eye large, three and a quarter 

 in head. Scales 10-60-7, D. 8, A. 9. Teeth 1.4-4.2. 

 Length, three and three-quarter inches. Colour: dark — 



