560 



11. Gammaropsis melanops, G. 0. Sars. 



(PL 199, fig 1). 



Gammaropsis melanops, G. O. Sars, Oversigt af Norges Crustaceer, I, p. Ill, PI. 6, fig. 5. 

 Syn. : Gammaropsis erytbrophthalma, Boeck (not Lilljeborg). 



Body comparatively somewhat more slender than in the preceding 

 species. Cephalon exceeding in length the first 2 segments of mesosome 

 combined, lateral corners terminating in a sharp, somewhat deflexed point. 

 Anterior pairs of coxal plates in female scarcely deeper than the correspond- 

 ing segments, 1st pair rather small, 2nd pair in male the largest, 5th pair 

 with the anterior lobe evenly rounded, and not quite as deep as the preceding 

 pair. Last pair of epimeral plates of metasome produced at the lateral corners 

 to a small dentiform projection defined above by a distinct sinus, posterior 

 edge boldly curved in its inferior part. Eyes rather large, oval reniform, 

 pigment very dark. Superior antennae exceeding half the length of the body, 

 1st joint of the peduncle much shorter than the 2nd, 3rd exceeding in length 

 the 1st, flagellum not attaining the length of the last 2 joints of the peduncle 

 combined, and composed of about 10 articulations, accessory appendage very 

 slender, and about 1 /3 as long as the flagellum, being composed of 4 articu- 

 lations. Inferior antennae a little shorter than the superior, with the flagel- 

 lum about half the length of the peduncle. Both pairs of antennae, as in the 

 preceding species, provided posteriorly with fascicles of slender bristles. 

 Anterior lip produced in front to a strong spiniform projection. Anterior 

 gnathopoda rather feeble, carpus gradually widening distally, and densely 

 setous below, propodos scarcely longer than the carpus, and oval in form, 

 palm longer than the hind margin, dactylus slender and distinctty dentate 

 inside. Posterior gnathopoda in female not nearly so strong as in the preced- 

 ing species, though somewhat larger than the anterior ones, propodos but 

 little longer than the carpus, and oblong in form, palm shorter than the hind 

 margin, and slightly flexuous, with 2 strong spines below, dactylus of moderate 

 size, and dentate inside ; those in male, as usual, more strongly built, propodos 

 somewhat longer than the carpus, and having the palm defined below by a 

 distinct angle, in front of which occurs a strong spine, palmar edge smooth, 

 and angularly produced above the middle. Pereiopoda much more slender than 

 in the type species, basal joint of the 3 posterior pairs rather narrow, oblong 

 in shape. Last pair of uropoda with the rami about the length of the basal 

 part, and narrow linear in form. Telson small, subquadrangular in outline, 



