144 BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



the tip of the snout, distant from the nostril by the diameter of the 

 pupil. 



Caudal slender, truncate, connected for one third its length to 

 dorsal and anal; last dorsal and anal rays not shortened. The 

 lower lobe of the pectoral of elongate rays, these free nearly to the 

 base; the lobe variable in length, reaching from a short distance past 

 the vent to the anal fin, usually reaching midway between vent and 

 anal fin. 



Color dusky, darker toward the caudal; the skin transparent, lax, 

 dusted with brown dots; lips black; flesh dotted; lower lobe of 

 pectoral fin darker than the upper lobe; mouth and gill cavity dusky; 

 peritoneum black; stomach white. 



Note on several large specmiens over 200 mm. in length. Body 

 deeper; depth 3.6 to 4.1 in length without caudal. Lower lobe of 

 pectoral fin longer than head, extending beyond the upper lobe and 



Figure 67.— Careproctus colletti. Teeth from a specimen from Albatross Station 5029 



past the origin of anal fin. Body gelatinous; anterior dorsal rays 

 surrounded by tissue; skin lax, less dusky than in the small specimens. 

 Color pinkish; lips black; margin of dorsal and anal and the caudal 

 black; gill cavity dusky. 



The large specmiens from the Japan and Okhotsk Seas appear to 

 belong to the same species as the specmiens from Bering Sea and the 

 Gulf of Alaska. There are no large specimens from the latter regions 

 with which to make comparison. The large specimens differ consider- 

 ably among themselves, especially in the size of the disk. The small 

 specimens taken with the large specimens differ slightly, or not at all, 

 from specimens of equal size taken off the coast of Alaska. It appears 

 from the evidence we have that the species ranges from the Gulf of 

 Alaska to the Japan Sea and that the specimens attain the greatest 

 size in the latter and neighboring portions of its range. 



The teeth of specimen No. 53033, U.S.N.M., appear to differ from 

 the teeth examined in other specunens. The teeth of this specimen 

 appear to be stouter and with the lateral lobes slightly developed. 



