FISHES FROM BERING SEA AND KAMCHATKA. 



41 



in strongly marked individuals a faint dark bar on occiput with a light spot anteriorly at the center of 

 the occipital depression ; a faint dark bar from eye forward across preorbital and both lips, a second from 

 eye downward across cheeks; spinous dorsal with a narrow black bar confined largely to one or two 

 spines, running upward from the front of the dark dorsal bar; soft dorsal, caudal, and upper pectoral 

 rays faintly barred, a dark blotch at base of middle pectoral rays; under parts white, the ventrals and 

 anal unmarked. 



This species is closely related to Icehts bicornis from the Atlantic, but differs widely in the form 

 of the anal papilla; the lateral line presents always a continuous and complete series of plates to the 

 base of the caudal fin, whereas in bicornis the plates are usually interrupted on caudal peduncle; the 

 space between the lateral line and the dorsal series of scutes is naked, without plates or prickles in 

 uncinalis, and a series of plates is never present immediately above base of anal fin. 



Icelus uncinalis has not been obtained by previous expeditions, and its occurrence is known only 

 from Petrel Bank, Bering Sea, to the vicinity of the Commander Islands. In eastern Bering Sea it is 

 replaced by an undescribed species which heretofore has been identified doubtfully with Icelus bicornis, 

 a species which extends its range southward at least to the coast of Oregon. To the eastward, along 

 the coast of Kamchatka, Icelus uncinalis is replaced by another closely allied species, Icelus spatula. 



List of St.\tions. 



Icelus spatula, new species. (Fig. 3 and 3a.) 



Type, a male specimen, 69 mm. long, from station 4794, off Avatcha Bay, Kamchatka; depth 58 

 fathoms. 



Measiu"ementii in hundredths of length without caudal: Head 37.5; snout 10.5; orbit 12; interor- 

 bital width 3; width of head 19; depth at occiput 22; maxillary 18; greatest depth 25; depth of caudal 

 peduncle 4.2; longest dorsal spine 11; longest dorsal ray 16; caudal 22; pectoral 30; ventral 18; anal 

 papilla 13. 



Dorsal ix-20; anal 16; pectoral 18 Plates in lateral line 41; plates in dorsal series 32. 



The following table gives range in fin rays among 12 cotypes of this species: 



Occipital crests and spines higher, the occipital depression deeper than in other species of the 

 bicornis group, this being markedly so in comparison with Icelus uncinalis, to which it stands most 

 nearly related. A simple slender filament on the summit of each of the anterior occipital tubercles; 

 a longer simple slender supraocular filament, which like the preceding is readily detached and often 

 wanting; no other filaments present. Nasal spines pungent; preopercular spines much larger and 

 stronger than in uncinalis, the upper deeply cleft, the second long and slender, directed backward, 



