KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 35. N:0 5. 35 



all p. a saw-like exteriör margin. The distal part of the 2nd p. carries a small number 

 (5) of teeth, of the 3rd p. has smooth exteriör margin and of the 4th p. about 8 teeth. 

 Ri of all pairs 3-jointed. Longitudinal proportion of the joitits on the 2nd p. 1:2:2, 

 on the 3d p. 1:3:4 and on the 4th p. 1:4:6. Se on the 2nd p. 0:0:1, on the other 

 0:0:2; Si \, 2, b on all pairs. Surface of Ri 2 with a curved row of apiculi. Ri 3 of 

 the 3d and 4th p. with some apiculi. 



Fiftli pair of lecjs. The left leg oiily developed, scarcely longer than the B of the 

 4th leg, 4-jointed, the 3 proximal joints ecjiial and as long as laroad, naked. The 4th 

 joint, slightly shorter than the 3 proximal together, with 2 small exteriör apicidi and 

 somewhat longer terminal «S. 



Description of the male. Body. Length (anterior part 0,9, posterior 0,3) 1,2 mm. 

 Dorsal outline (laterally) slightly convex, the front suddenly bent in a right angle. Joints 

 4; Ce~Th 1 twice as long as the 3 other joints together. Abdomen 5-jointed, the second 

 joint somewhat longer than the other, which are of equal length and broader than long. 

 Ftirca as long as broad. Si faint. Of the St 2 and 3 are of nearly equal length and 

 shorter than abdomen, slightly longer than St 1 and iV-^ times longer than St 4. 



First pair of antennas. The left and right similar and as in Paracalanus parvus, 

 the 6 proximal joints uniting into a thicker division, which carries a number of sentorial 

 appendages, and, centrally, a strong S. Also Aa 7 and 8 uniting. 



Second pair of antenmn similar to those of Paracalanus parvus. B 2 with 2 Si. 

 Re 1 and 2 uniting, naked, 3 — 6 each with a long plumose Si. Re 7 with 1 Sp at some 

 distaiice from the naked apex. Ri 1 naked. Li of Ri 2 with 4 and Le with 6 »S (the 

 utimate of the latter with stiff hairs near tlie base). 



Mandihle without masticatory apparatus. B witli 1 distal Si. Re and Ri well 

 developed, the former with 6, the latter with 1 -|- 8 S. 



Maxillce very reduced. Le 1 with 5 8. Re longer and broader than Ri, carries 

 6 S, and Ri one longer and one shorter S. Other lobes slight and naked gibbosities. 



Maxillipeds of the 2nd pair^ 3-jointed; joints of nearly equal length. B 1 twice 

 as long as bi'oad, naked. B 2 with 2 Si approximate to the distal end, one Vs as long 

 as the joint and plumose, the other small. Ri not articulated, carries ö groups of small 

 Si (2, 3, 2, 2, 1) and 3 strong plumose Se, the proximal of which is twice, the median 

 1^/2, the distal as long as the joint. 



First pair of natatory legs. B 1 with a plumose Si near the base and smooth in- 

 teriör margin. ^ 2 as long as i> 1 , with a sigmoid Si, unarmed. Re more than twice 

 as long as Ri, which is shorter than B. Re 3-jointed, Re 1 and 2 of equal length. Re 3 

 IV3 as long. Se O, O, 2. Si 1,1,4. St bristle-like, longer than the joint. Beneath 

 Se 1 there are some small bristles. Ri 2-jointed. Ri 1 not half as long as Ri 2. Se 

 O, 1. Si 1, 4. 



Natatory legs of the 2nd to 4th pair. B 1 twice as long as B 2 with nearly straight 

 margins and a short Si, unarmed. B 2 broader than long, naked and unarmed. Re twice 

 as long as Ri, 3-jointed. Re 1 short, or as broad as long. Re 2 more than twice as long 



I failed to discover tlio 'st pair. 



