1898-1902. No. 18.] CRUSTACEA. 



Fam. Idotheidse. 



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 A*sellota. 



Fam. Janiridse. 



17. Janira tricornis (KROYER). 



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 Fabricii, 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. 



