354 PECULIAKillE« OF PLAICE FROM DIFFERENT FlSIllMi GUuUNDS. 



SPECIMENS IX THE BRITISH MUSEUM COLLECTION. 



Variety of Pleuronedes platessa. 

 Collected liy U.S. Fishery steamer Alhalross, at Herendeeii Bay, Alaska. 



Length, Ht. of Length Can. 

 cm. Body, of Head. I'ed. 



23-3 ... 42 ... 24 ... 6 



Can. Tubercles. Gill D. A. 



Fiu. Rakers. Rays. Rays. 



18 ... 5 ... — ... 70 ... 51 



Ciliated Cil. Matu- 

 Hays. IJody. rity. 



. 40 ... ...(?i 



Varieties of Pleuronedes glacialis. 

 Collected by U.S. Fishery steamer in Nushagak River, Alaska. 



18-3 



39 



Collected at Kotzebue Sound, Alaska. 

 23 ... 9 ... 16 ... ... — ... 53 ... 39 ... 34 ... 5 ... $ m 



Varieties of Pleuronedes flesus. 



PL Italicus, Giinther ; imsser, Bonaparte. 



Specimens from Dalmatia. 



PI. 'luscus, Pallas. 

 Specimens from the Bosphorus. 



Specimens from the Black Sea. 



Specimens from Constantinople, labelled Platcssa vulgaris. 



