294 



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

 unai'med. Telson comparatively somewhat smaller than in P. hjnceus, 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. 



Remarlf. — This form was originally described by the author as a 

 new species under the name of CEdiceros micropf!. I now, however, believe it 

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

 and other authors, has been, in my opinion, wrongly identified with Qi. 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 ffi. 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 coa.st of Finmark, this species is far from being 

 rare. 1 have thus collected it in considerable numbers in the Varaugerfjord, 

 at Vadso, in depths var3'^ing from '20 to 80 fathoms, and Mr. Schneider has 

 found it in the neigbourhood of Troraso. 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 

 CEdiceros micr ops 'ivom the Kara Sea, I regard as a distinct species. 



Gen. 3. MonOCUlodeS, 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 quadrangiilar, and 

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

 Eyes contiguous, placed above at the base of the rostnam. 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 tlie mandibles 

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

 Gnathopoda comparatively less powerfvil, and more or less xinequal in struc- 

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



