occurring on the Norwegian Coasts. 337 



of the posterior abdominal feet is much shorter than the outer 

 one. 



Bathyporeia, Lindstrom. — This genus, which was referred 

 to its proper place by its founder, was removed, like the pre- 

 ceding, to the subfamily Gammaridse by Spence Bate ; but 

 the thick peduncle of the superior antenna and the form of the 

 second pair of feet refer it to the subfamily Lysianassidse. 

 Moreover I think it must stand here on account of the struc- 

 ture of the maxillipedes, in which it closely resembles Uro- 

 thoe, whilst the palpi, as in that genus, are elongated and 

 have their second joint strongly developed, and also especially 

 because the ovigerous lamellee, exactly as in Anonyx, are long 

 and narrow, Avith scattered long hairs. The epimera are fur- 

 nished with cilia, which the preceding genus also possesses, 

 of which Anonyx bears indications, and which are more evi- 

 dent in the following genera. By the large inner lamella of 

 the first pair of maxillre, which is furnished with numerous 

 ciliated hairs, it approaches the genus Pontoporeia. 



The species occurring with us differs in some particulars 

 from the descriptions and figures of B. pilosa ; but as this va- 

 ries much, I believe that it is only a variety of that species. 



Pontoporeia, Kr. — This genus of Kroyer's, which he founded 

 upon the Greenland species, P. femorata, and which was en- 

 riched with three species by Lindstrom and Bruzelius, may 

 be here further increased by another new one, which occurs in 

 the University Zoological Museum, without indication of the 

 locality where it was found, but is probably from the coast of 

 Bergen. 



P. armata, mini. — This differs from the other species in 

 having the secondary flagella rather long ; the first pair of 

 feet are long and strong; and the inner branch of the posterior 

 abdominal feet is nearly rudimentary. It is also distinguished 

 by having the upper posterior angle of the first joint of the 

 fifth pair of feet produced and bent up into a long curved 

 point ; the first joint of the sixth pair much longer than [that 

 of] the fifth, and furnished at the same place with a similar 

 but somewhat straighter spine ; the first joint of the seventh 

 pair considerably dilated and broader than high ; the telson 

 very broad, with a small emargination in its posterior margin ; 

 the second and third abdominal segments somewhat carinated, 

 and both projecting at the posterior edge into a short blunt 

 spine. 



This genus is the type of the subfamily PontoporeinEe, Dana, 

 to which belong, according to him, the genera Phoxus and 

 A mpelisca, which also occur with us. But if we examine the 

 structure of this typical genus, we shall see that it differs but 



