106 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



vol. 37. 



Islands, at East Cape, Attu Island, S. 18° W., 4 miles (lat. 52° 55' 



40" N. ; long. 173° 26' E.) 

 at a depth of 135 fathoms. 



Type - specimen. — Cat. 

 No. 39313, U.S.N.M. 



ARCTURUS CRASSISPINIS, new 

 species. 



This species is likewise 

 close to Arcturus longis- 

 pinus Benedict, but differs 

 in having spines present 

 on all the segments of the 

 thorax and abdomen, only 

 they are all of the same 

 length and short, none being 

 rudimentary. The termi- 

 nal segment of the abdomen 

 is also longer than in A. 

 longispinus. This species 

 is very large, measuring 44 

 mm. in length and 8J mm. 

 in width. 



The spines on the body 

 are short and stout. The 

 surface of the body is cov- 

 ered with short hairs. The 

 first pair of antennae do not 

 extend much beyond the 

 second article of the second 

 pair of antennae. The sec- 

 ond antennae have the sec- 

 ond article 4 mm. long ; the 

 third 13 mm.; the fourth 

 20 mm.; and the fifth, 17 

 mm. in length. 



About 45 specimens come 

 from the following local- 

 ities: Station 5005, in 

 Aniwa Bay, approaching 

 Korsokov, Saghalin Island, 

 at lat. 46° 4' 40" N. ; long. 

 142° 27' 30" E.; station 

 5006, at lat. 46° 4' N. ; long. 



Fig. 29. — Arcturus crassispinis. X 1.5. Female. 

 (Drawn by Miss V. Dandridge.) 



142° 29' E.; station 5007, at lat. 46° 3' N.; long. 142° 31' E.; 



