BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 27. AFD. lY. N:0 8. 83 



Parerythrops G. O. Särs. 1869. 



Among the species belonging to JVeniatopus {Eriithrops), 

 (t. o. Sahs described, in 1864, one species whieh deviated so 

 miich in some points of its structure, that the author, even 

 at that time, only with great hesitation included it in the 

 genus. Having afterwards discovered some other species all 

 agreeing with each other, but deviating from Nematopus 

 ()hcsu.s\ he established then in 1869, in his :>Unders0gelser 

 över Christianiafjordens Dybvandsfanna> a new genus, viz. 

 Pärer tjthyops, for this species. Two other species, viz. Pare- 

 njthrops nbyssicola from the deep basins of the Sogne Fiord, 

 and Parcrijihrops spedahilis from two stations of the Nor- 

 wegian North Atlantic Expedition, were then, in 1877, shortly 

 described by the some author. To the same genus is now 

 generally referred another species described, from the coasts 

 of New England in 1879, by Smith as Meterijthrops robusta. 



As the preceding genus, this includes also deep sea forms 

 of an undoubtedly Arctic origin. Up to now the genus has 

 not been met with in other seas except in the cold area of 

 the North Atlantic and in the Arctic Ocean. 



37. Parerythrops robusta (Smith). 



1870. Meterythrops robusta Smith, Stalk-eyed Crust. Atl. Coast 



Xorth America, 1. c. p. 93, pl. XII, 

 tig. 1, 2. 



1H71I. Parerythrops (i. O. Sars, Carcinol. Bidrag til Norges 



Fauna etc, 1. c. III, p. 98, tab. XXXIX. 



Locality : 



iu 1900: 



stat. 19. lat. ir 35' N., long. 18' 1;V W., East Greenland, S.E. of 

 Pendulum Island, depth 150 m., mud and stonas, 5 VIII, 

 seven spec. (4 o^, 3 y). 



This species was first observed in Massachusetts Bay 

 and in the Grulf of S:t Lawrence by the late distinguished 

 carcinologist Prof. Smith, who proposed a new genus for it, 

 mainly on account of the different structure of the first pair 

 of pleopods in the niale, the endopodite being here rudimen- 



