236 



DISCOVERY REPORTS 



Description. More robust than barbimanus, the antennae, gnathopods, peraeopods 

 and uropods all much more robust than in barbimanus. Antero-lateral angle of head 

 rounded, or at most very obtusely angular. Denticles on pleon segment 4 obsolete. 



Antenna 1 extending back to end of peraeon segment 2 or very slightly beyond (in 

 barbimanus as far as end of 4th segment). Antenna 2 stout, Corophium-like, scarcely as 

 long as antenna 1 . 



Gnathopod 1 , 6th joint with a very short but distinct transverse palm with a spine at 

 its angle ; cf . Chilton's figure of lendenfeldi, but finger is here proportionately shorter. 

 Gnathopod 2, as in Chilton's figure of lendenfeldi (1884, Trans. N.Z. Inst., xvi, p. 262, 

 pi. xx, figs. 1 a-e). 



Peraeopods 1 and 2, also as in lendenfeldi. The 4th joint is more strongly expanded 

 than in Stebbing's figure of plamosa (1888, pi. cxxvi). Peraeopod 3, 2nd joint broadly 



d e. \\^^-^F-----t £ 



Fig. 148. Haplocheira robusta, n.sp. a. Uropod 1. b. Uropod 2. c. Telson and 

 uropod 3. d. Pleopod (setae on rami omitted). e,f. Peraeopods 3 and 5. 



expanded, basal width as great as length, 3rd very wide and very short, 4th very robust, 

 likewise the 5th and 6th, the latter with a series of 4-5 strong spines on anterior margin; 

 thus differing markedly from Stebbing's figures of plumosa. Peraeopod 4 also stout, 

 but a little longer than peraeopod 3, 2nd joint regularly oval, otherwise similar to 

 peraeopod 3. Peraeopod 5 a little longer than peraeopod 4, 2nd joint strongly expanded 

 on hind margin, forming a rounded lobe extending to middle of 4th joint, 5th and 6th 

 joints with strong spines on anterior margin. 



Anterior margins of 2nd joints distally and of 3rd and 4th joints in peraeopods 3-5 

 with plumose setae, especially in peraeopod 5. 



Pleopods with the projection on inner distal angle of peduncle much more developed 

 than in barbimanus, with several plumose setae. 



Uropod 1 with stronger spines than in barbimanus. Uropod 2, the spine at end of 

 peduncle stout but relatively shorter than in barbimanus, the spines on each ramus much 



