94 



COREGONUS TABRADORICUS HARRY PIERS 



On 5th May, 1924, Mr. March obtained two more speci- 

 mens at the same place, which be forwarded to the Museum 

 (ace. nos. 5454 and 5455). With these three specimens before 

 us, it is now possible to determine the form as a variant of 

 Coregonus labradoricus of Richardson, from which it differs 

 mostly in possessing a high scale-formula for the lateral-line, 

 and in seemingly lacking the teeth on the tongue. The supple- 

 mented bone of the superior maxillary is well defined, and is of 

 the Coregonus type. 



The colour of the back is bluish-black, with blue reflections; 

 sides, silvery with blue reflections; belly, silvery with slight 

 bluish reflections; gill covers, yellowish; sides punctated with 

 black; dorsal fin, blackish with black punctations; lower fins, 

 white with black punctations, the other two-thirds blackish; 

 caudal blackish; iris yellow. 



Co.mparative table of size, proportions, and formulae of 

 fin-rays, scales, and gill-rakers: — 



Total length 



Length to base of caudal. . . 



Weight 



Head in length 



Depth in length 



Maxillary in head 



Eye in head 



Gill rakers in eye 



1st Dorsal, number of rays.. 



Anal, number of rays 



Ventral, number of rays. . . . 

 Scales: 



Lateral line to 1st dorsal.. 



Lateral line 



Lateral line to vent 



Gill rakers above angle 



Gill rakers below angle 



T}-pical 

 (Jordan 

 and 

 Evermann) 



21ins 



3 1-5 to 4 



4i to 5 

 2 to 2\ 

 11 or 12 

 11 or 12 



10 



71 to 76 



'l 



Back. 



9 

 10 

 15 or 16 

 / Not 

 \ elevated 



Millip.sigate Lake, Lun. Co., N. S. 



Ace. No 

 5225 



10.30 ins. 



9.15 ins. 



5 ozs. 



. 4.94 



4.81 



3.36 



4.60 



2.3s 



Hi 



m 



12 



9 or 10 



Right, 100 



Left, 101 



9 



11(?) 



\G{>) 



Not 

 elevated 



Ace. No. 

 5454 



11.25 ins. 



9.90 ins. 



6^ ozs. 



4.87 



4.71 



3.22 



4.95 



2.00 



lOi 



11 



11 



11 



Right, 100 



Left, 103 



9 



10 



14 or 15 



Not 



elevated 



Ace. No. 

 5455 



10.60 ins. 



9.22 ins. 



5^ ozs. 



4.63 



4.73 



3.58 



4.93 



2.0o 



lOi 



11 



12 



11 



Right, < 



Left, '. 



9 



10 



15 



Not 



elevated 



