256 THE CANADIAN NATURALIST. [Aug. 



Lotin^e Gill. 

 Dorsals two ; posterior as well as anal entire. 



Genus Lota Cuv. 

 Anterior dorsal mucli behind scapular region. Teeth not 

 enlarged. 



Lota lacustris Gill ex Walb. Fresh-water cusk. (Perley.) 



Ciliatin^e Gill. 

 Dorsals two ; anterior fringed, with a longer ray in front. 



Genus Rhinonemus Gill. 

 Head depressed behind, snout with cirrus. 

 Rhinonemus caudacuta Gill ex Storer. (Bell.) 



Motella caudacuta, Storer, Mem. Am. Ac. vi, p. 361, pi. 29, fig. 1. 



Genus Ciliata Coch. 



Head and body compressed, silvery. 



* Ciliata argentata Gill ex Reinh. 



Brosmin^e Sw. 

 Dorsal single. 



Genus Brosmius Cuv. 

 Brosmius Americanus Gill. 



Brosmius flavescens, Storer, Mem. Am. Ac. 



Lower jaw shorter, with an undivided barbel. 

 Br osmius flavescens Les.* 



Lower jaw longer, with a forked barbel. 



SUB-ORDER HETEROSOMATA. 

 PLEURONECTIDiE. 

 Pleuronectin^e, Gill. 

 Mouth small, the supramaxillary ending before or under front of 

 eye. 



Genus Pseudopleuronectes Blkr. 



Body with imbricated ctenoid scales. Teeth fixed, incisorial. 

 Lateral line not arched in front. 



Pseudopleuronectes Americanus Gill ex Walb. Common floun- 

 der. (Perley.) 



Platessa plana, Storer, Mem. Am. Ac. viii, 389, pi. 30, fig. 2. 

 Platessa pusilla, Dek. (young). f 



f Platessa pusilla DeKay = Pseudopl. Americanus, young. 



