CAPRELLIDiB. 355 



5. Caprella septentrionalis. (Plate LVI. fig. 3.) 

 Caprella septontrioiialis, KriUjer, Vuy. en Scand. pi. 25. f. 2. 



Body robust. Small tubercle on cephalon. A tubercular ridge near 

 the middle of the second and third segments of the pereion ; pos- 

 terior segments smooth. Superior antennte about one-third the 

 length of the animal. Inferior antenna? nearly as long as the 

 superior. Second pair of gnathopoda articulating near the centre 

 of the second segment of the pereion. Three posterior pairs of 

 pereiopoda short. 



Length ^ths of an inch. 



Hah. Arctic Sea, N. lat. 72° 45', W. long. 56° 50', in 15 fathoms 

 (Messrs. WarJuim and Harnson). 



6. Caprella scaura. (Plate LVI. fig. 4.) 



Caprella scaura, Templetoii, Trans. Eiit. Sac. i. p. 191. pi. 15. f. 6. 

 Edtcards, Hist, des Crust, iii. p. 107. 



" Cephalon having an occipital tooth. Fii'st segment of the pereion 

 cylindi'ical, but swollen out at the extremities ; second longer, 

 tumid posteriorly, giving attachment at the thickest part to the 

 second pair of gnathopoda ; third and fourth segments shorter and 

 thicker than the anterior. Eyes irregidarly arched. Superior 

 antennae twice as long as the inferior ; first joint of the peduncle 

 thick, contracting a little towards its apex ; second elongate, 

 obpyriform ; tliird very slender and waved ; flagellum equally long, 

 with minute spines arising from teeth or elevations on the infe- 

 rior surface, one half fused, the other subarticiilated. Inferior 

 antennas with the first two joints of the peduncle minute ; third 

 elongate, similar in form to the second of the superior antennae ; 

 fourth about the same length, waved ; flagellum M-ith a double 

 series of hairs arising from the inferior edge, and increasing in 

 length as they approach the apex, shorter than the preceding joint, 

 tapering, spiny, and articulate. First pair of gnathopoda small, 

 ovate, tapering. Second pair of gnathopoda long, slender, having 

 the basos very long and waved ; ischium, meros, and carpus 

 minute ; propodos long-ovate, palm oblique, hairy, with two tooth - 

 like processes ; dactylos much cur\-ed. Pereiopoda successively 

 longer, monodactyle, and hairy ; two small spines arise from 

 near the base of the ultimate joint of each pair. Colour pale 

 brown. 



" Length ^ an inch. 



" Hub. Mauritius." — Temphton. 



2 A 2 



