1898-1902. No. 18.] CRUSTACEA. 



6. Spirontocaris spinus (Sows.). 



Of this form only 3 specimens were secured, 2 of them having 

 been taken on July 22, 1900, in the Winter haven, 620 fath., and the 

 third on June 28, 1901, at the mouth of Hvalros Fjord. 



7. Spirontocaris turgid 'a (KROYER). 



Numerous specimens of this form were taken on July 12, 1900, in the 

 bay at Last End. It was also found occasionally in 8 other places. Off 

 the Norwegian coast this form is wholly restricted to the arctic region. 



Order Schizopoda. 



Suborder Mysidacea. 







Fam. Mysidse. 

 8. Mysis oculata (FABR.) 



This arctic form was taken in 9 different places, both at the bottom 

 and near the surface. In the latter case the specimens were chiefly 

 immature. 



Order Cumacea. 

 Fam. Leuconidse. 



9. Eudorella truncatula (Sp. BATE). 



A solitary female specimen of this form, not yet recorded from 

 the arctic region, was found in the bottom-residue of one of the bottles 

 containing collections taken on July 12, 1909, from the bay at Last End. 



Fam. Diaatylidse. 



10. Diastylis scorpioides (LEPECHIN). 



Two specimens of this genuine arctic form were taken, one on 

 Aug. 26, 1898, in Rice Strait, the other on July 26, 1900, off the mouth 

 of Stordalen. 



