290 



with both joints terminating in a claw-like projection. Inner ramus of 2nd pair 

 of legs somewhat more produced than in female, and having the setae more elon- 

 gated; that of 3rd pair distinctly triarticulate, with the middle joint produced at 

 the end outside to a long deflexed spiniform process. Last pair of legs much 

 smaller than in female, with the distal joint more distinctly defined; inner ex- 

 pansion of proximal joint very slight, with only 2 setae. 



Colour not yet ascertained. 



Length of adult female 0.89 mm. 



Remarks. This form, as stated above, was first described by Glaus under 

 the name of Lilljeborgia linearis, and was subsequently redescribed by Prof. Brady. 

 It is an easily recognisable species, which cannot be confounded with any other 

 form belonging to the present family. 



Occurrence. Only 2 specimens of this form, a female and a male, have 

 hitherto come under my notice. They were both found in a sample kindly sent 

 to me by Mr. Nordgaard, who took it in the Skjaerstad Fjord, just within the 

 polar circle. 



Distribution. Mediterranean, at Nice (Glaus), British Isles (Brady), Gulf 

 of Guinea (Scott). 



Gen. 60. MeSOCletOdeS, Gl. O. Sars, n. 



Generic Characters. Body sub-cylindric in form, with the segments densely 

 spinulose at the hind edge. Integuments rather thin and flexible. Cephalic segment 

 comparatively short, with the rostral projection almost obsolete. Urosome scarcely 

 attenuated behind, and having the last segment rather large. Caudal rarni slender 

 and narrow. Anterior antennae with the number of joints less reduced than in 

 the 2 preceding genera. Posterior antennae less strongly built, with the basal 

 joint distinctly divided in the middle, outer ramus small but well defined. Man- 

 dibular palp distinctly biarticulate. Maxillae without any distinct exopodal and 

 epipodal lobes. Maxillipeds comparatively small. Natatory legs with the inner ramus 

 of esentially the same structure in all pairs and rather small, biarticulate, outer 

 ramus in 1st pair of moderate size, in the 3 succeeding pairs very slender, with 

 the setae of the inner edge rudimentary. Last pair of legs with the distal joint 

 well defined and very narrow ; inner expansion of proximal joint short and broad. 

 Ovisac single. 



