Marine Copepoda 



31 K 



Second maxilliped (mp 2): like that of H. flexus, with simple fusiform 

 hand, but the dactylus is shorter than the hand as 2: 3 (fig. 42). 



Fig. 42. Harpacticus superflexus. Second maxilliped. 



The first thoracic foot (p 1) is like that of H. flexus, both rami two-jointed, 

 Ri about as long as the proximal joint of Re; Ri 2 with a claw-like spine and 

 two setse at the end, Ri 1 with distally placed si (Fig. 43); Re 2 ending with 

 three curved claws and a slender seta. In the second thoracic foot (p 2 9) 

 it is to be noted that the middle joint of the inner ramus (Ri 2) has two si, against 

 one si figured for H. chelifer; this duplication of the si was found in two successive 

 preparations on both sides. The third and fourth legs agree with H. chelifer. 



Fig. 43. Harpacticus superflexus: 

 Terminal portion of inner ramus of p 1. 



In the male, the second foot (p 2 (f) has the mucronate process of Ri 2 

 only a little exceeding the length of Ri 3 (Fig. 44) . 



Fig. 44. Harpacticus superflexus. P 2 Ri of male. 



In the third foot of the male (p 3 cf), Re 1 is two-thirds the length of Re 2 

 and Re 3 together, the relative lengths of these joints being '26, 19, 20; the 

 enlarged outer spines of Re 3 are graded as 10, 17, 27; thus Re 3 se 3 is to Re 3 

 as 27 : 20, the se 3 has usurped the position of the terminal seta (st), so much so 

 that the latter appears to belong to the series of si, of which there are four (in 

 addition to the st); the st has about twice the bulk of the fourth si, but it is 

 flexible, longer and much slenderer than the se 3. In H. chelifer (^ the p3 

 Re 3 st is rudimentary; in H. uniremis cf it makes a fourth spine. In H. gracilis ^ 

 the st is like that of H. uniremis, but the Se 3 is the shortest of the series. The 

 male of H. flexus is undescribed. 



