272 



Norwegian coast, viz., at Bejan in the outer part of the Trondhjemsfjord, 

 and at Hammerfest, Finmark. It occurred in both places rather sparingly 

 in a depth of 30 to 50 fathoms, among Hydroids. Moreover I found a few 

 specimens of this form among some StenothoidaB collected by Mr. Schneider 

 in the neighbourhood of Troms0, and kindly sent to me for examination. 



26. Metopa palmata, n. sp. 



(PI. 96, fig. 2). 



Form of body as in the last species. Cephalon about twice as long 

 as the 1st segment of mesosome, lateral corners subangular at the tip. 

 Coxal plates rather large; 2nd pair somewhat broader than in M. rdbusta, 

 and more obliquely rounded in front; 3rd pair fully twice as deep as the 

 corresponding segment; 4th pair larger than the 2 preceding pairs combined, 

 and somewhat broader than they are deep, distal edge forming a perfectly even 

 curve. Last pair of epimeral plates of metasome somewhat less produced 

 at the lateral corners than in M. robusta. Eyes rather large, rounded. 

 Antennae much shorter than in the said species, the superior ones scarcely 

 exceeding in length a third part of the body, 1st joint of the peduncle 

 about the length of the cephalon, and much longer than the 2 succeeding 

 joints combined, flagellum but little longer than the peduncle, and composed 

 of about 12 articulations. Inferior antennas about the length of the superior, 

 last joint of the peduncle somewhat longer than the penultimate one, 

 flagellum exceeding half the length of the peduncle. Anterior gnathopoda 

 extremely slender, basal joint not at all dilated, meral joint unusually 

 elongated, and produced at the end inferiorly to a narrow triangular projec- 

 tion, carpus much elongated and linear in form, propodos still narrower and 

 somewhat shorter, without any palmar edge, dactylus short, scale-like, and 

 provided on the inner edge with a dense series of curved seta?. Posterior 

 gnathopoda rather powerful, meral joint simple, without any ascending 

 lamella inside, propodos very large, oblong quadrangular in form, palm 

 transverse, and defined below by a broad setous lobe slightly emarginated 

 at the tip, its edge somewhat concave and obscurely crenulated, dactylus 

 short and broad at the base, terminating with a small hook. Pereiopoda some- 

 what less strong than in the last-described species; last pair with the basal 

 joint rounded oval, meral joint rather broad and produced beyond the carpal one. 

 Last pair of uropoda with the basal joint nearly as long as the other 2 

 combined, and armed with 3 denticles. Telson fully twice as long as it is 



