362 HAWAIIAN AND OTHER PACIFIC ECHINI. 



Station 4794. Off eastern coast of Kamchatka, 52 47' 20" N., 158 44' 30" 

 E. Bott. temp.? 58-69 fathoms. S., p. 



Station 4795. Off eastern coast of Kamchatka, 52 46' 50" N., 158 44' 30" 

 E. Bott. temp.? 48-69 fathoms. Gn. s., p. 



Station 4796. Off eastern coast of Kamchatka, 52 47' N., 158 43' E. 

 Bott. temp.? 48 fathoms. S., p., sh. 



Station 4804. Off Simushir Island, 46 42' N., 151 47' E. Bott. temp. 

 35.9? 229 fathoms. Crs. p., bk. s. 



Station 4810. Between Hakodate and Sado Island, Japan, 41 17' 20" N., 

 140 7' E. Bott. temp. 44.7. 90-195 fathoms. Fne. gy. s. 



Station 4822. Between Nanao and Tsuruga, Hondo, Japan, 37 8' 10" N., 

 137 8' E. Bott. temp. 39.4. 130 fathoms. Gn. m. 



Station 4982. Between Hakodate and Otaru, Hokkaido, Japan, 43 N., 

 140 10' 30" E. Bott. temp. 32.7. 390-428 fathoms. Gn. m. 



Station 4987. Between Hakodate and Otaru, Hokkaido, Japan, 43 19' 20" 

 N., 140 17' E. Bott. temp. 44.8. 59 fathoms. Rky. 



Station 4993. Between Otaru, Hokkaido, and Korsakov, Saghalin, 45 25' 

 30" N., 140 53' E. Bott. temp. 35.1. 142 fathoms. Gy. m., s., g. 



Station 4996. Between Otaru, Hokkaido, and Korsakov, Saghalin, 45 35' 

 N., 140 55' E. Bott. temp. 43.4. 86 fathoms. Bk. s., p. 



Station 5016. Off eastern coast, southern end of Saghalin, 46 44' 30" N., 

 143 45' E. Bott. temp. 29.8. 64 fathoms. Br. m.. fne. bk. s., r., co. 



Station 5041. Off southern coast of Hokkaido, Japan, 42 16' 30" N., 

 142 4' E. Bott. temp. 49.8-41.1. 61-140 fathoms. Br. m., fne. bk. s., co., s. 



Station 5048. Between Hakodate and Yokohama, Japan, 38 9' 24" N., 

 141 52' 30" E. Bott. temp. 40.7. 129 fathoms. Dk. gy. s., brk. sh. 



Station 5049. Between Hakodate and Yokohama, Japan, 38 12' N., 

 142 2' E. Bott. temp. 37.8. 182 fathoms. Dk. gy. s., brk. sh. 



Bathymetrical range, 33^28 fathoms. Extremes of temperature, 49.8- 

 29.8. 



One hundred and sixty-four specimens. 



Strongylocentrotus polyacanthus A. Ag. and Cl. 



Strongylocentrotus polyacanthus A. Agassiz and Clark, 1907. Bull. M. C. Z., LI, p. 123. 



Plates 94, figs. 30-33; 113, fig. S. 



This species is so near to drobachiensis, that it would be quite superfluous 

 to give a detailed description of the single specimen upon which it is based. 



