4"b 



Canadian Arctic Expedition, 1913-18 



Station 29/; 70° 13' N., 140° 50' W., April 4, 1914. From stomach of Phoca 

 hispida Schreber; water depth about 30 fathoms; 30 specimens. 

 Distribution. — Arctic ocean. 



3. Onisimus botkini Birula. 



1897. Onesimus botkini Birula, Annuaire du Mus^e Zoologique de I'Acad. Imp. des Sciences 



de St. P^tersbourg, vol. II, 1897, p. 105. 

 1909. Onisimus botkini BRtroGEN, Mto. de I'Acad. Imp. des Sciences de St. P^tersbourg, ser. 8, 



vol. 18, No. 16, p. 7, pi. II, f. 20-25. 



Station 27c.' Lagoon-bay at Collinson point, Alaska, September 15, 1913, 

 0-1 foot water; 1 specimen. 



Station 28o: ColUnson point, Alaska, July 8, 1914, from stomach of Sal- 

 velinus malma Walb.; 7 specimens. 



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

 of Cottus quadricornis L., 3 fragments. 



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

 mud; 200 specimens. 



Figure 1. Onisimus botkini Birula d'- 



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

 urosome. 6 Telson, and 2d and 3d uropods. 



The specimens examined by Birula and by von der Brtiggen 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. 



