358 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.42. 



head 22; greatest depth of body 24; depth of caudal peduncle 4.5; 

 interocular -width 13; diameter of eye 3; width at angles of mouth 18; 

 distance from tip of spout to end of maxillary 14; length of gill slit 

 10.5; distance from tip of snout to disk 13; to anus 39; diameter of 

 disk 11.5; distance from disk to anus 15; from anus to front of dorsal 

 31; longest pectoral ray 25; longest ray of lower lobe 15; shortest 

 pectoral ray 15. 



Dorsal 45; anal 34; pectoral 41. 



Body heavy anteriorly, not very deep. Head broad and depressed, 

 about as broad as deep, nearly quadrate in cross section; profile 

 almost straight from occiput to snout. Snout depressed, broadly 

 rounded; upper jaw projecting so that the upper band of teeth is 

 partly exposed. Eye very small. Anterior nostril in a short thick 

 tube, posterior with a slightly projecting rim. Mouth very broad, 

 its angle behind vertical from anterior nostril; maxillary reaching 

 vertical from middle of eye. Teeth strongly trilobed, in about 30 

 oblique rows in the half of the upper jaw; outer teeth smaller and 

 not so strongly trilobed. Gill slit extending down in front of 11 

 pectoral rays. 



Caudal slightly rounded, the dorsal and anal joined with its basal 

 two-thu'ds, the last dorsal and anal rays shortened, forming rounded 

 lobes. Pectoral broad, not notched, the lower lobe broadly rounded, 

 its upper rays not shortened. Disk large, oval, its anterior edge 

 below the e^^e. Vent far back, nearer anal fm than disk. 



Coloration: Pale gray with dusky mottlings and stripes along base 

 of dorsal and top of body; margin of dorsal, anal, pectoral, and the 

 caudal dusky; posterior surface of pectoral dusk}^; free tips of all 

 rays whitish ; a white line where the sldn of the body is firmly attached 

 to the vertical fins, this most pronounced on the caudal. 



Thumb-tack prickles on the top and sides of head and bod}^, 

 apparently absent on throat and abdomen. 



C. tanakx can be distinguished from C. owstoni by the broad de- 

 pressed snout. They both agree in the character of the caudal and 

 pectoral fhis, which distinguish them from the other species of the 

 genus. 



Five specimens of this species were in the collections of the Imperial 

 University of Japan, three of these from the vicinity of Vries Island, 

 Sagami Sea, taken in the spring of 1906, the other two probably 

 from the same locality. An additional specimen has been recently 

 taken at Fusan, Korea, by Dr. David Starr Jordan. 



7. CYCLOGASTER OWSTONI (Jordan and Snyder). 



Trismegistus owstoni Jordan and Snyder, Smiths. Misc. Coll., vol. 45, 1904, 

 p. 238, pi. 58 (Sagami Bay). 



No additional specimens were secured of this interestmg species, 

 which is Ivnown only from the type, and from a specimen from the 

 market at Nagasald recorded by Schmidt.* 



1 Proc. U. S. Nat. Mus., vol. 28, 1904, p. 189. 



