P. T. CLEVE, PLANKTON COLLECTED BY MR. THORTLD WULFF. 379 



Furca symmetrical. Fifth pair of legs with bifid Re and Ri, 

 the former three times longer than the latter, which has 

 denticulate ends. — Length 2 millira. 



Habitat. Off Karachi, 2437' K 6(v43' E. (one specimen). 



Description of the female. Body. Anterior part 1,5 millim. 

 long, posterior part 0,5 millim. long. — Four times longer 

 than broad. — Anterior part 5-jointed. Proportional length 

 of the joints as 10 : 5, 5 : 2, 6 : 2, 6 : 4, 4. Posterior part 3-joint- 

 ed; proportional length of the joints and the furca as 10 : 

 7:3, 5:4. The genital segment has dorsally a large apophysis 

 turned to the right side. Furcal branches P/a times longer 

 than broad; Se behind the middle. 



Antennce of the lst pair reach to the end of the genital 

 segment. Joints 3 — 7 incompletely articulated. Length of 

 the joints in 0,005 millim. 



Aa2 3—7 8 9 10 11 12 13 14 15 16 17 18 19 20 

 22 22 9 9 9 12 12 15 19 19 22 22 22 27 19 



21 22 23 24—25 

 16 14 14 12 



Antennce of the 2nd pair. Bl short, with 1 Si. Re does 

 not reach to the distal end of Ril, inserted near the proximal 

 end of B2. Proportional length of B2, Ril and Ri2 as 10 : 

 13:6. 



Mandihle B2 twice as long as broad, with 1 + 1 + 2 Si. 

 Re longer than Ri, but inserted at a lower level, masticatory 

 apparatus with one larger exteriör tooth and four smaller 

 interiör teeth. 



Maxilla similar to that of L. ivollastoni. B2, Ril and 2 

 uniting, with 1 + 2 + 2 + 2 S. 



Natatory tegs. Re of all pairs 3-jointed, Ri of all pairs 

 2-jointed, slightly shorter than Re 1 + 2. — Proportional 

 length of B2, Ke"l, 2, 3 and St. 



Se of Re 1, 1, 2 of the lst pair, 1, 1, 3 on the other. 

 Se of the lst p. bristle-like, of the other pairs triangulär. 



