136 



BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



Eye 3.5-4 in head; disk 4.5-4.8; lower lobe of the pectoral fin 1.8-2. 

 Body rather deep and compressed. Teeth simple. Eye moderate, 

 the lower half silvery. Gill slit either above the pectoral fin or 

 extending down in front of the upper ray. Cactuslike pricldes 

 present. Lower pectoral lobe short, about 2 in the head, reaching 



Figure 57.— Careproctus rastrinus. Type. Showing the great development of the head 



REGION characteristic OF SOME SPECIES OF THE GENUS 



little past the vent. Disk small, cupped, somewhat triangular. 

 Body translucent, dotted with brown; peritoneum silvery, undotted. 



CAREPROCTUS RASTRINUS Gilbert and Burke 



Careproctus raslrinus Gilbert and Burke, 19126, p 362. 



Type.— Female , No. 73331, U.S.N.M.; Albatross Station 5026, 

 southern part of Okhotsk Sea; depth 119 fathoms. Length 280 mm. 



Distribution. — Southern part of the Ok- ^. 



hotsk Sea, off the coast of Sakhalin. Alba- 

 tross Stations 5021 and 5026; depth 73 and 

 119 fathoms. Three specimens examined. 



RelationsTiips. — C. rastrinus agrees with C. 

 acantJiodes and C, trachysoma in the presence 

 of cactuslike prickles and in most other re- 

 spects. These three species inhabit neigh- 

 boring or overlapping regions. (See descrip- 

 tions of G. acanthodes and C. trachysoma). 



Description of type. — Eye moderate, not especially prominent, 

 black; pupil small, round. Gill slit 3.4 in the head, extending down 

 in front of four pectoral rays. Suprabranchial pores 2, close together; 

 rudimentary pores on the top of the head and along the median line 

 of the sides; upper snout pores nearly between the nostrils; other 

 pores normal. Cactuslike prickles on the body and fins, more 

 scattered toward the caudal, none on the chin and lips; these prickles 



Figure 58.— Careproctus ras- 

 trinus. Teeth from type 



