444 Mr. R. I. Pocock on neio 



Pores dorsal, close to the border, rather less than a diameter 

 from the edge. 



Caudal process semicircular, with sinuate border. 



/6Verna nearly smooth, sparsely granular in front and behind. 



Hairs on legs normal, setiform. 



Measurements in millimetres. — Total length 62 ; width of 

 second segment 8"3, of fifth 9'8. 



<^ . — Flatter and smoother than female, with keels larger 

 and rather strongly bidentate, the lateral border from the 

 fifth to the eighteenth being angularly emarginate, with 

 sometimes minor denticulations. 



Copulatory feet as in fig. 17, the anterior lower branch 

 curving inwards, then abruptly downwards and backwards. 



Measurements in millimetres. — Total length 55 ; width of 

 second segment 8, of fifth 9. 



Loc. Solomon Islands {C. M. Woodford). 



Diodontodesmus verrucosus^ sp. n. (Fig. 18, p. 441.) 



^ . — Differing from the preceding species in being a 

 uniform blackish tint throughout, in having the keels perfectly 

 horizontal, the rows of tubercles much coarser, the two ante- 

 rior rows extending right on to the keels and almost to the 

 emargination, the three rows being very strong even on the 

 fi'rst three segments ; pores smaller and a little more lateral ; 

 caudal process with conspicuous lateral tubercles and a more 

 transverse posterior border. Legs thinner, longer, and studded 

 with clavate hairs. 



Copulatory feet with a stout angular prominence at the 

 base of the lower (posterior) prong ; the prongs themselves 

 longer than in Woodfordi. 



Measurements ^"n millimetres. — Total length 55 ; width of 

 second segment 9, of fifth 9'6. 



Loc. Solomon Islands {C. M. Woodford). 



The species may be recognized as follows : — 



a. Lateral margins of segments almost entire, at most 



sinuous (the rest as under ci^) Woodfordi, ^ . 



h. Lateral margins of segments strongly and angularly 



emarginate, so as to be bidenta-te {S)- 



«\ Anterior rows of tubercles on dorsum of segment 



very weak, obliterated on the anterior segments ; 



cylindrical half of segments white above, with 



median black line Woodfordi, <^ , 



h^. Two anterior rows of tubercles coarse and strong 

 on all the segments, extending on to the keels ; 

 segments of a uniform tint verrucosus, cf . 



