NO. 1941. 



NEW CYGL00A8TERID FISHES— BURKE. 



569 



anal. Pectoral notched; the lower lobe of 7 rays, reachmg slightly- 

 past the disk. Disk large, less than 2 in the head, nearly round and 

 with a broad flap. Vent separated from disk by two-thirds diameter 

 of disk. 



Body grayish; large, irregular brown blotches on head and body, 

 these extending on dorsal and anal fins; caudal with a broad bar 

 near the base; lower jaw with 3 bars on each side; peritoneum with 

 scattered black dots. 



Remarks. — The anterior 5 or 6 dorsal rays usually are set off by a 

 shallow notch; sometimes the 3-4-5-6 rays are equal, but they 

 never increase regularly in length. The notch between the dorsal 

 and caudal is either present or absent. The connection between the 

 caudal and the dorsal is normally greater than one-fifth the length of 

 the caudal; in one cotype it was just one-fifth the length of the 

 caudal. All the specimens have "thumb-tack" prickles. The 

 coloration is of two types; (1) that described for the type, (2) body 

 grayish or olive brown; dorsal and anal mottled and barred with 

 brown; pectoral speckled with brown; caudal with a broad bar near 

 the base. 



Specimens examined. 



CYCLOGASTER MEGACEPHALUS Burke, new species. 



Tijpe. — Female, Cat. No. 53791, U.S.N.M. Southeastern Bering 

 Sea, Albatross station 3519; depth, 37 fathoms. 



Distribution. — Southeastern Bering Sea, Albatross stations 3518, 

 3519, 3520; depth, 36 to 38 fathoms. 



Relationships. — Cyclogaster megaceplialus resembles Cyclogaster 

 major in the heavy head and body, but is otherwise distinct. It can 

 readily be distinguished from Cyclogaster gibbus and related species 

 by the heavy head and body. For a comparison with Cyclogaster 

 hristolense see description of the latter species. 



Description of type. — Dorsal, 43; anal, 36; pectoral, 36; pyloric 

 caeca, 29. Depth, 3.7 in the length; head, 3.6. Eye, 5.8 in the head; 

 disk, 2. 



Body heavy anteriorl}^, deep and broad, deepest at the origin of 

 the dorsal fin, tapering rapidly to the base of the caudal, much com- 

 pressed posteriorly. Head heavy, short, about as wide as deep; 

 cheeks swollen. Mouth broad; maxillary reaching vertical from the 

 posterior margin of the eye. Teeth trilobed, in rather narrow bands, 

 arranged in about 13 or 14 oblique rows in the half of each jaw. 



