Mr. Lubbock on some Arctic species of Calanidae. 1 27 



each ramus, and the secondary setae are larger than in the other 

 species. The inner side of the large ramus also in all the legs 

 has on the second segment a row of short hairs resembling the 

 setae on the longer ones. -.Hi 



The fifth pair (fig. 5) have the rami 3-jointed. They havBj 

 small spines on the base like the corresponding pair of legs iA 

 C.magnvs, ^,, j, ,.,..„ r,.«vv. ... .-...^^ -. ..,..m,. ... »• 



Colour? > ,pJttefiii^98 'T iijodfi lo eieianoD riofimd 



C borealis. Frons rotundatus. Cephalothorax magnus, 6-arti- 

 culatus, postice rotundatus, in medio acutus. Antennae 

 anticae corpore paulo longiores, setis longis. Pedes bi- 

 remes antici, ramis 2-articulatis ; postici unum tantum- 

 modo segmentum habent. Abdomen .3-j««:iiculatum^ stylia 

 brevibus. li/jq Isift 'io ,<&\Vtxswtt Ap "tsac^ WjM *>A't 



Long, i unc. ^' ' ' umlyD otj? ^KfifiO 



Hab, Mare Arct. N. Lat. 76°-78° 40^ W. Long.5«0P^i •cmr^R'i^io 



The apical hairs of the anterior antennae are short. The pos- 

 terior antennae resemble those of C. magnus (PL V. fiffs. 2, $)/^ 

 Colour ? ^^'''^'^ J^iSfioo ^stA rioltnmi ;idi 



o 



C. elegans. Frons rotundatus. Cephalothorax angustus, B-ai^ty*' 

 culatus, postice rotundatus. Antennae anticae corpore paulb 

 longiores, setis longis. Pedes biremes primi ramis 2-articulatis, 



^^'ttltimi maris unum tantummodo segmentum habent ; foeminae 

 pedes postici parvissimi. Abdomen 2-articulatum. , ™ ^ 



Long.iunc. :^^^« ^^^ , 



Hab. Mare Arct. N. Lat. 62° 11', W. Long. 52°.' ' ^^^ '^^^Z 



This species appears only to have occurred in one place, where 

 it was abundant. The individuals are all about the same size, 

 and I do not think it can be the young of any other species 

 (PI. V. figs. 7, 8, 9). 



Colour? odA ,Kij^uoiaiiy«,«y; j'j tiirjijiiu 



C. lonyus. Frons rotundatus. Cephalothorax 5-articulatus, pos- 

 tice obtusus sed non rotundatus. Antennae anticae corpore bre- 

 viores, setis brevibus, apicalibus tamen longis. Pedes biremes 

 antici ramis 3-articulatis. Pedes postici minimi. Abdomen 

 longum, angustum, 3-articulatum. 



r^^]^*nf ^^^A i. AT T X --/»o ti^^o o/^» ' ^jsrf fii "itiftjb 98an9Jnj3 1q 

 Hab. Mare Arct. N. Lat. 76°--76° ZQf. , ,. .,. ...» ..,f. i? 



Of this species there are only three specimens, but it is very 

 distinct from any of the others ; the length of the abdomen being 

 its most striking characteristic. 



The anterior antenna are about as long as the cephalothorax. 



