I I 



Arctic Expedition, 1913-18 



Station _".>/. 70 i:;' X., 1 10 .'>()' W., April 4, 1914. From stomach of Phoca 

 fa'spida Schreber; water depth about :!() t'allionis; 30 specimens. 

 Distribution. Arctic ocean. 



3. Onisimus botkini Birula. 



|s'>7 Onesimut l>tkini Bun I.A, Annuaire du Mus6e Zoologique de 1'Acad. Imp. des Sciences 



,], Si P&ersboiirg, vol. II, 1897, p. 105. 

 i'.iOM Onisimus l>tl;ini Hin GGBN, Mt'-ni. do 1'Acad. Imp. des Sciences de St. Petersbourg, ser. 8, 



vol. is, No. Hi. p. 7, pi. II, f. 20-25. 



Station 21 c: Lagoon-bay at Collinson point, Alaska, September 15, 1913, 

 0-1 foot water; I specimen. 



Station '-'So: Collinson point, Alaska, July 8, 1914, from stomach of 8al- 

 vdin J/N intilnm \Yalb.; 7 specimens. 



Station 28r: Bay at Collinson Point, Alaska, July 24, 1914; from stomach 

 of Coitus (/iKK/ncornis L., 3 fragments. 



Station 30c: Demarcation point, Alaska, May 10, 1914, 3 fathoms, sandy 

 mud; 200 specimens. 



2 



Figure 1. Onisimus botkini Birula 



1 Head and antennae. 2 Maxilla 1. 3 Mandible. 4 2d and 3d abdominal segments and 



urosome. 5 Telson, and 2d and 3d uropods. 



The specimens examined by Birula and by von der Briiggen all came from 

 shallow water in the Kara sea, so it is very interesting to see these very fine 

 specimens from Alaska. As these specimens differ in a few minor details from 

 those collected in the Kara sea, I here add a brief description and a few figures. 



