68 BULLETIN OF THE BUREAU OF FISHERIES. 



Sarritor leptorhynchus (Gilbert). 



List op Stations. 



The Komandorski Plateau and the codfish banks west of southern Kamchatka. 



Bathyagonus nigripinnis Gilbert. 



One specimen from station 4797, off Avatcha Bay, east coast of Kamchatka, depth 682 fathoms. 



Aspidophoroides bartoni Gilbert. 



From Petrel Bank, Komandorski Plateau, off Avatcha Bay, east coast Kamchatka, and off mouth 

 of the Aangan River, west coast Kamchatka, as follows : 



List op Stations. 



Anoplagonus inermis Gunther. 



Stations 4777 and 4779, on Petrel Bank; depths 52 and 54 fathoms. 



CYCLOPTERID^. 

 Eumicrotremus orbis (Gunther). 



Letkotremus vinolentus Jordan and Starks, Proceedings Calif ornia^ Academy of Sciences, 1S95. p. 827, pi. 



This species is so closely allied to E. spinosus of the north Atlantic that Collett, after a comparison 

 of specimens from both oceans, has called the two identical. There exist, however, certain evident 

 differences in the distribution of the plates which enable us to distinguish the species at any age after 

 the plates have begun to develop. 



In E. spinosus the interorbital area has 4 longitudinal series of plates which continue without 

 interruption along the back as far as tlie interval between the dorsals. The inner two interorbital 

 series are continuous with the series along either side of base of spinous dorsal; the plates increase in 

 size regularly backward, those along base of spinous dorsal being as large, or nearly as large, as the 

 largest on sides of body, and reduced to 3 pairs, of which the first pair are partly in advance of the fin 

 and partly under the first spines, the second is xmder the middle and posterior part of the fin, and the 

 third largely under the interval between the dorsals. 



In E. orbis there are also 4 interorbital series, but neither the outer (supraocular) nor the inner 

 pairs are definitely continued posteriorly. The two inner series usually diverge from each other on 

 the posterior part of the head and may leave an interval in which either a short median series or a 

 patch of irregular plates develop; they are not posteriorly in line with the base of the dorsal, the last 

 plates diminish in size, and the series terminates opposite the front of the dorsal. The plates along the 

 base of the dorsal are much smaller than the larger plates along the flanks, and are more numerous 

 than in E. spinosus; i pair is immediately in front of the origin of the fin, 3 small pairs are imder the 



