1898-1902. No. 18.] CRUSTACEA. 



Fam. IdotheiddB. 



16. Mesidotea Sabini (KROYER). 



A solitary specimen of this form was taken on Aug. 4, 1902, in Gaase 

 Fjord, north of the peninsula, from a depth of 10 15 fathoms. Accord- 

 ing to Miss H. RICHARDSON, the 2 arctic species Idothea Sabini and 

 /. entomon cannot be referred either to the genus Chiridotea or to 

 Glyptonotus, for which reason the new genus Mesidotea has been 

 established by that distinguished naturalist. 



Suborder Asellota. 



Fam. Janiridse. 

 17. Janira tricornis ( 



Some few, more or less mutilated specimens of this arctic species 

 were picked up from the bottom-residue of 3 or 4 bottles. 



Fam. Munnidse. 



18. Munna Fabricif, KROYER. 



Several specimens of this form were found in the bottom-residue of 

 5 of the bottles. 



19. Munna Kroyeri, GOODSIR. 

 Found together with the preceding species. 



Fam. Munnopsidse. 



20. Munnopsis typica, M. SARS. 



A single specimen of this characteristic form was taken on Aug. 2, 

 1901, in the upper part of Gaase Fjord. 



21. Eurycope mutica, G. 0. Sars. 



A few specimens of a small Eurycope, apparently referable to this 

 species, were picked up from the bottom-residue of a bottle containing 

 collections taken on July 30, 1900. 



