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the rami about the length of the basal part, very narrow, and quite 

 unarmed. Telson comparatively somewhat smaller than in P. lynceus, oval 

 quadrangular in form, tip transversely truncated. Colour light yellowish, 

 with a faint tinge of rose, but without any pigmentary spots or ramifications. 

 Length of adult female 11 mm, of male 10 mm. 



Bemarks. This form was originally described by the author as a 

 new species under the name of (Ediceros microps. I now, however, believe it 

 to be identical with (Ediceros propinqvus Goes, which latter form, by Boeck 

 and other authors, has been, in my opinion, wrongly identified with (E. lynceus. 

 Probably Goes has confounded both species, but the figure he gives of 

 the anterior part of the body, agrees better with the present species than 

 with (E. lynceus. Though very nearly allied to the latter species, this form 

 may be easily distinguished by its much smaller size, the shorter and less 

 tumefied frontal part, the more slender pereiopoda, and finally by the want 

 of pigmentary ornament. 



Occurrence. - - Off the coast of Finmark, this species is far from being 

 rare. I have thus collected it in considerable numbers in the Varangerfjord, 

 at Vads0, in depths varjdng from 20 to 80 fathoms, and Mr. Schneider has 

 found it in the neigbourhood of Tromse. The southernmost place, where I 

 have met with it, is at Kvale on the Nordland coast. Out of Norway, it has 

 not yet with certainty been recorded; for the form named by Dr. Hansen 

 (Ediceros microps from the Kara Sea, I regard as a distinct species. 



Gen. 3. MODOCUlodeS, Stimpson, 1853. 



Form of body generally more slender than in the 2 preceding genera. 

 Cephalon more or less produced in front, and forming, as a rule, a sharp 

 deflexed rostrum. Anterior pairs of coxal plates rounded quadrangular, arid 

 successively increasing in size to the 4th; 5th pair rather large and bilobed. 

 Eyes contiguous, placed above at the base of the rostrum. Antennae more or 

 less unequal, the superior ones being, as a rule, much shorter than the infe- 

 rior, flagellum of the latter in male slender and filiform. Oral parts nearly 

 as in the 2 preceding genera, except that the molar expansion of the mandibles 

 is well-developed and provided with a distinct fluted triturating surface. 

 Gnathopoda comparatively less powerful, and more or less unequal in struc- 

 ture, the anterior ones being generally shorter and stouter than the posterior, 



