569 



part somewhat produced, lateral corners more or less projecting between the 

 2 pairs of antennae, postantennal corners well marked. Anterior ])airs of 

 coxal plates comparatively large and closely contiguous; 5t]i pair srarccly 

 smaller than the preceding pairs, their anterior lobe being very strongly 

 developed. Eyes small, placed near the extremities of the lateral corners of 

 tlie cephalon. Antennae subequal, and generally densely setiferous posteriorly, 

 with the peduncles elongated, the superior ones without any accessory 

 appendage. Mandibular palps rather elongated, with the terminal joint 

 comparatively short and densely setous. Oral parts otherwise normal. 

 Gnathopoda distinctly subscheliform, the posterior ones being somewhat 

 larger than the anterior; both pairs in male, but especially the posterior 

 ones, considerably more strongly Ijuilt than in female. Pereiopoda not mucli 

 elongated, antepenultimate pair rather stout and strongly reilexed, with the 

 liasal joint boldly curved anteriorly, and the dactylus inverted. Last pair of 

 uro])oda comparatively slender, extending beyond the others, basal part 

 rather large and somewhat expanded at the base below, rami veiy unequal, 

 the inner one being very minute, the outer one elongated and having a small 

 terminal joint. Telson extremelj^ small, triangular in form. 



Eemarks. — This genus was established by Kroyer as early as in the 

 year 1842, to include an Arctic species F. Reinhardi. The genus Eiscladus 

 of Sp. Bate is undoubtedly identical with that of Kroyer. It is a very 

 distinct genus, exhibiting some features in common witli the genus Am- 

 phithoe belonging to the next family. The smooth, generally boldly-curved 

 body, the deep, closely contiguous coxal plates, the long and narrow urosome, 

 and the unusually stout and strongly recurved antepenultimate pair of 

 pereiopoda will serve for at once recognizing the genus. It comprises 3 

 northern species, all of which belong to the favina of Norway, and will be 

 described below. In addition to these, the Rev. Mr. Stebbing has added 2 

 new species from the Challenger Expedition. 



15. Photis Reinhardi, Kioyer. 



(PI. 202). 



Photis Reinhardi, Krayer, Nat. Tidsskr. 1 R. Bd. IV, p. 15.5. 



Syn : Amphithoe pygmsea, Lilljeborg. 

 1 AmphithoiJ Reinhardi, Goes. 



Body comparatively stoiit and rather deep, with broadly vaulted 

 back. Cephalon not nearly attaining the length of the first 2 segments of 



