174 



BULLETIN 75, UNITED STATES NATIONAL MUSEUM. 



is longer and somewhat stouter than the others. Tentacle scale 

 single, huge, circular or oval. Color (dried from alcohol), disk light 

 .)Vownish-gra3', or dull purplish with a few small light spots; arms 

 somewhat duller, irregularl}^ and indistinctly banded with dull purple, 

 ospecialh' on distal half; upper arm plates dull gray, often clouded 

 with purplish, or else prettily mottled with dull purple and whitish; 

 oral surface lighter. 



Localities. — Albatross station 3159, off California, lat. 37° 47' 20" 

 N.; long. 123° 10' W., 27 fathoms, rocky, 1 specimen; station 3168, 

 off California, lat. 38° 1' 25" N.; long. 123° 26' 55" W., 34 fathoms, 



Fig. 78.— opiiioNEREis eukybrachiplax. a-c, from japan, X 3. d-/,. from California, x -• oandi/, 



FROM above; 6 AND C, FROM BELOW, C AND /, SIDE VIEW OF THREE ARM JOINTS NEAR lUSK. 



rocky, coral, 1 specimen; station 3702, off Honshu Island, Japan, 31 

 to 41 fathoms, volcanic mud, sand, rocks, 3 specimens; off California, 

 station ?, 1 specimen. 



Type.— C&t. No. 25589, U.S.N.M., from off California. 



This species may be distinguished at once from its Pacific relatives, 

 annulata, jJorrecta, schayeri, and nuda, by the very characteristic upper 

 arm plates, which are quite unlike those of any of the four. It is a 

 great pity that there should be any doubt about the locality of any of 



