290 



2. (Ediceros borealis, Boeck. 



(I'l. 103, %. 1). 

 (Ediceros borealis, Boeck, Crust, amph bor. & arct. p. 82. 



Body very short and stout, and much inflated in its anterior part. 

 Ceplialon shorter than the first 2 segments of mesosome combined, its upper 

 contour evenly curved in front, rostrum rather short, scarcely reaching beyond 

 the middle of the basal joint of the superior antennae, lateral corners obtusely 

 rounded. Coxal plates comparatively larger than in the type species, 1st pair 

 rather expanded in their outer part, distal edge oblique and biangulated; 

 3rd pair slightly insinuated at the tip; 4th pair somewhat deeper than they are 

 broad, infero-posteal corners distinctly angular; oth pair with the anterior lobe 

 somewhat deeper than the posterior. Eyes rather small, contiguous. Supe- 

 rior antennae nearly as in the type species, but with the flagellum composed 

 of 10 articulations only. Inferior antennae with the last joint of the pe- 

 duncle scarcely longer than the penultimate one, flagellum about the length 

 of the peduncle. Gnathopoda very strong, carpal process narrow, and but 

 sparingly setous, propodos large and tumid, oval in form, palm shorter than 

 the hind margin, and, as in the type species, defined below by a small den- 

 ticle, dactylus comparatively short. Pereiopoda somewhat less robust than 

 in CE. saginafns, dactylus of the 3rd and 4th pairs rather elongated; basal joint 

 of last pair rounded oval, and comparatively smaller than in the type species, 

 posterior edge scarcely concave. Last pair of uropoda rather small, rami 

 very narrow, the inner one armed with a single spinule only. Telson oval 

 in form, much longer than it is broad, tip obtusely roi;nded. Colour in the 

 living state of the animal not yet stated. Length of adult female scarcely 

 exceeding 9 mm. 



IirmarJis. — This species, established bj' Boeck, i.^ easily distinguished 

 from on. scifjinatus not only by its much inferior size, but also by its very 

 short and compact form of body, by the smaller and less abruptly bent 

 rostrum, and finally by the somewhat diff'erent shape of the gnathopoda. 



Occurrence. — I have never myself met witli this species, but Boeck 

 states its occurrence off the coast of Finmark, and one specimen in our 

 University collection is labelled in accordance therewith. 



Dif/rihufio)!. — Greenland (Boeck and Hansen). 



