38 CLEVE, PLANKTON FJIOM THE INDIAN OCEAN AND THE MALAY ARCHIPELAGO. 



The mala. Abdomen 5-)ointed. Right antennaB prehensile, its distal part 5-jointed; 

 Äa 18 not projecting- into a spine. Left 5th leg longer thati the right; its B 2 triangulär 

 and its Re with 1 Se. L. 1,2 mui. 



Description of the female. Body L. (anterior part 0,9, posterior 0,4) l,.i mm. 

 The anterior part more than twice as long as broad, broadest at Tk 1, gradually tapering 

 toAvards the rounded front, 5-jointed; longitudinal proportion of the joints ^4:1^/2:1: 

 \ : l*/5. Last segment synimetrical, its lateral angles acute. Ce ends in a bifid rostrum. 

 '"•"■■' Abdomen 2-jointed; the genital-segment '^U as long as the distal, nearly twice as 

 long as broad. 



Furca 2V2 times as long as broad, V4 as long as Ah o~5. Se near the end, as 

 long as the furca. Si very faint. St 2 not exceeding the abdometi in length. St 3 

 somewhat shorter and sliglitly longer than St 1. St A half as long as St 2 and twice 

 as long as Se; all plumose. 



Antennce of the 1st ixdr reach to the end of Th 5, 16-jointed. Length of the joints 

 in 0,005 mm. 



Aa 2-5, 6-8, 9-12, 13, 14, 15, 16, 17, IS, Ii), 20, 21, 22, 23, 24-25. 

 14 , 12 , 18 , 7,5, 5,2, 5,2, 10, 16, 20, 18, 10, i) , 9 , 13, 13. 



S as a rule short. Terminal joint with 6 S, the longest of which is 3 times longer than 

 the joint. 



Antennce of the 2nd pair. B 1 broader than long, with 1 plumose Si\ B 2 as long 

 as broad, with 2 distal Si. Re and Rl of equal length. Re 4-jointed; Re 1 as long as 

 broad, naked; Re 2 more than twice as long as broad. R 3-6 uniting into a very short 

 joint carrying 4 plumose Si, twice as long as Re. Re 7 small, scarcely twice as long 

 as broad, with 1 Sj) near the proximal end and 3 >S at the apex, all long and plumose. 

 Ri 1 broader than long, with 2 distal Si. Le with 6 plumose S, the longest more 

 than twice as long as Ri; the exteriör, which is shorter, carries near the basis some stiff' 

 haii-s (exteriör margin of Le hairy). Li carries 8 S, decreasing in length towards the 

 interiör margin, the 3 innermost being very faint. 



Mandible. B trapezoid, as long as broad, with 1, 1, 2 Si. Re and Ri short, of 

 equal length. Re with 6 plumose S. Ri with 2, 2, 6 S. The inastieatory apparntus 

 well developed, with 1 short Si. The large exteriör tooth claw-like and separated by a 

 gap from the other 5 teeth. • . 



Maxilla not distinctly articulate. B twice as long as broad. Li 1 with about 12 

 stiff bristles. lÄ 2 with 3 plumose S. Li 3 with 2 *S. B 2 and Ri with 2, 2, 2, 5 S. 

 Re with 9 plumose S. Le 1 with 9 plumose, long aS. B 2 with Re and Ri reflexed. 



First maxilliped twice as long as broad, lobes crowded; L 1 — 4 each with 2 

 stronger, spinulose Sa and 1 small Sp; L\ besides with 3 small bristles. L 5 stronger and 

 more projecting than the other, with 1 strong and 1 half as long spinulose S. L 6 and 

 Ri 1 and 2 each with 1 strong, falciform spinulose 8a. Ri 3 with 2 strong Sa and 

 1 Sp Vs as long. 



Second maxilliped. B 1 somewhat longer than B 2, and B 2 longer than Ri. 

 B 2 half as broad as i? 1 and 4 times longer than broad. L 2 and 3 each with 2 strong 



