623 



Remarks. — There cannot in my opinion be any .doubt that the 2 

 forms described by Boeck as Glaiicononie Kroyeri and G. Steenstrupi are only 

 the male and female of the same species, and that this is identical with 

 Norman's Unciola planipes. It is easily distinguished from the preceding 

 species, not only by its very inferior size and more slender form of 

 body, but also by several well-marked anatomical characteristics mentioned 

 ill the above diagnosis. The male looks very like a Corophkim owing to the 

 inmsually strong development of its inferior antennae. 



Occioreitce. — The species would seem to occur along the whole 

 Norwegian coast, from the Christianiafjord to Vadso, and is in some places 

 rather abundant. It is, however, only found in greater depths, ranging from 

 50 to 300 fathoms. 



Distvihntioii, — British Isles (Norman), Kattegat (Meinert), Green- 

 land (Hansen). 



Gen. 5. Neohela, Sidn. Smith, 1881. 

 Syn ; Hela, Boeck. 



Body very slender and tapering posteriorly, with the metasome poorly 

 developed and the coxal plates very small. Cephalon comparatively short, 

 and without any distinct rostrum. Eyes ])resent or subobsolete. Antennae 

 exceedingly elongated, with long and sleniler flagella, the superior ones provided 

 with a distinct accessory appendage. Oral paits on the whole normal. 

 Gnathopoda rather large, subsimilar, with the carpus and propodos lamellarly 

 expanded, the latter comparatively short and distinctly subcheliform. Per- 

 eiopoda long and slender, the 3 posterior pairs successively increasing in 

 length, and having the basal joint not at all expanded, dactylus of the last 

 2 pairs slender, falciform. Anterior pair of branchial lamellae very small, 

 the others of moderate size; incubatory lamellae only present at the base of 

 tlie 3 middle pairs of legs. Pleopoda unusually slender and feeble. The 2 

 anterior pairs of uropoda normally developed, with slender, spinous rami ; 

 last pair very small, with the basal joint not expanded, terminal joint elong- 

 ated, linear. Telson imperfectly defined from the last segment, smooth, 

 tapering distaliy. 



Remarhs. — The present genus was established by Boeck in the year 

 18()0, but as the name he proposed, Hela, was already appropriated, Prof. Sidn. 

 Smith changed it, in the year 1881, to Neohela. By a mistake, I spelt it in my 

 «Oversigt» as Helella. The genus is a very distinct one, and Boeck, who at first 



