306 



length of the hind margin, carpal lobe rather large, reaching nearly to the 

 palm of the propodos. Posterior gnathopoda comparatively strong, propodos 

 oblong, not quite 3 times as long as it is broad, palm very oblique, though 

 a little shorter than the hind margin, carpal process extending to the palm 

 of the propodos. Pereiopoda unusually strongly built, the 4 anterior pairs 

 having the joints laminarly expanded and densely setous, dactylus shorter 

 than the propodal joint and rather broad, laminar. Last pair of pereiopoda 

 considerably exceeding half the length of the body, basal joint very broad in 

 its proximal part, carpal joint the longest. Telson oval quadrangular, slightly 

 tapering in its outer part, terminal edge transversely truncated. Colour in 

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

 reaching 17mm. 



Remarks. In its outward appearance this species bears a perplexing 

 resemblance to a Parirdiceros, having the body of a similar robust form, and 

 the frontal part produced in much the same manner. The structure of the 

 gnathopoda. however, shows the form to be a true Monoculodes. From the 

 following nearly, related species, it may be at once distinguished, by its robust 

 form of body, and by the far less produced frontal part. 



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

 states its occurrence at Haugesund, west coast of Norway. 

 Distribution. Greenland (Hansen). 



14. Monoculodes longirostris (Goes). 



(PL 108, fig. 3). 

 (Ediceros longirostris, Goes, Crust, amph. maris Spetsbergise, p. 10, fig. 20. 



Body much less strongly built than in M. Kroijeri, and rather compressed. 

 Cephalon attaining the length of the 4 anterior segments of mesosome com- 

 bined, frontal part greatly produced and horizontally projected, reaching 

 beyond the basal joint of the superior antennae, its tip somewhat vaulted 

 above, with only a very slight trace of a rostrum ; lateral corners of cephalon 

 somewhat produced, though obtuse at the tip. First pair of coxal plates 

 moderately expanded distally; 3rd pair with the terminal edge, as in M. 

 Kriit/rri, distinctly insinuated; 4th pair deeper than the corresponding segment, 

 distal edge obtusely angulated in the middle, infero-posteal corners somewhat 

 produced. Eyes oval in form, and rather large, placed close together at the 

 tip of the frontal part. Superior antennae about the length of the cephalon 

 and the first 3 segments of mesosome combined, 2nd joint of the peduncle very 

 slender and fully as long as the 1st, flagellum somewhat exceeding half the 



