48 



MEMOIBS OF THE QUEENSLAND MUSEUM. 



The first gnathopod (figs. 8 and 9) has the side plate large and subtri- 

 angular. projecting forwards, its anterior angle rounded and bearing a fringe of 

 long seta? which extends also along the lower margin ; the basal joint widens 

 considerably distally and bears a few long setfe towards the apex ; the ischium 



Fig. 7. — Maxilliped, male (Roto-iti sijecimen). 



Fig. 8. — First gnathopod, male (Brisbane specimen). 



Fig. 9. — First gnathopod, female (Brisbane specimen). 



and merus are both short, their posterior margins bearing long setse, those on 

 the ischium reaching nearly to the middle of the carpus; the carpus is greatly 

 elongated, being narrowly oblong in shape, its posterior margin densely fringed 

 with a double row of long setae, a few scattered ones being also found on the 

 anterior margin ; the propod is much shorter than the carpus, about the same 

 width throughout, its palm nearly transverse, not defined, being closely over- 

 lapped by the dactyl ; near the base of the propod is an oblique row or tuft of 

 about 6 or 7 long setae. This appendage seems to be the same in both sexes. 



The second gnathopod in the fully developed male (fig. 10) is much 

 stouter than in the female, the side plate is oblong wdth the inferior angles 

 rounded, its inferior margin wdth a few long setae ; the merus is produced into a 

 long scoop-like process reaching considerably beyond the end of the carpus which,, 

 together wdth the basal portion of the propod, appears to fit into the hollow of 

 the scoop, one margin of which is fringed with very long sette most of whicL 



10 10 a 



Fig. 10. — Second gnathopod, male (Brisbane specimen). 

 -I'^ig. 10a. — Second gnathopod, male, immature (Brighton specimen). 



