259 



states its occurrence in the Christianiafjord and at Brettesnaes, Lofoten 

 Isles. The figures here given are from Greenlandic specimens, kindly sent 

 me by Dr. Hansen. 



Distribution. Greenland (Hansen). 



16. Metopa tenuimana, n. sp. 



(PL 91, fig. 1). 



Very similar in outer aspect to the 2 last-described species. Cephalon 

 scarcely twice as long as the 1st segment of mesosome, lateral corners angular 

 at the tip. Coxal plates somewhat less deep than in the said 2 species; 4th 

 pair considerably broader than they are deep, distal edge oblique and evenly 

 curved. Last pair of epimeral plates of metasome considerably produced at 

 the lateral corners. Eyes of moderate size, rounded. Antennae not nearly 

 so much elongated as in the 2 last-described species, the superior ones not 

 attaining, by far, half the length of the body, 1st joint of the peduncle 

 about the length of the cephalon, 2nd much shorter, flagellum considerably 

 exceeding the length of the peduncle, and composed of about 9 articulations. 

 Inferior antennse somewhat shorter than the superior, the 2 outer joints of 

 the peduncle nearly equal-sized, flagellum about the length of those joints 

 combined. Anterior gnathopoda with the propodos scarcely as long as the 

 carpus, and gradually tapering distally, its inferior edge without any denticles. 

 Posterior gnathopoda rather feeble, and somewhat resembling those in M. 

 longicornis, propodos very slender, and comparatively more elongated than in 

 that species, palm not attaining the length of the hind margin, and defined 

 below by a distinct dentiform projection, its edge quite smooth. Pereiopoda 

 rather similar to those in M. pusiUa, though perhaps somewhat less power- 

 ful; last pair with the basal joint regularly oval in form, and exceeding half 

 the length of the remaining part of the leg, meral joint produced nearly to 

 the end of the carpal one. Last pair of uropoda with the basal joint rather 

 short, scarcely exceeding in length the 2nd, and only armed with a single 

 small denticle at the end, terminal joint shorter than the preceding one. 

 Telson of the usual oblong linguiform shape, and armed with one or 2 pairs 

 of dorsal denticles, tip narrowly rounded. Colour in the living state of the 

 animal, not yet stated. Length of adult female 3 mm. 



Remarks. Though very like M. pnsilla both in its outer appearance 

 and in size, this new species is, on closer examination, easily distinguishable 

 by the comparatively larger eyes, the much shorter antennae, and by the 



