STALK-EYED CRUSTACEA 193 



B. Flagdhini excluded from tJie interjial orbital hiatus 

 by a process of the basal antcnnal Joint : — 



3. Lupa. 



Lupa (part) . Leach. 



Lupa . . . H. Milne Edwards, A. Milne Edwards, 

 De Haan. 



The carapace resembles that of Neptunus. The basal 

 antennal joint is prolonged in front and on the outside 

 from its movable part, and is soldered to the external 

 suborbital angle. This angle is very prominent. The 

 fourth joint of the external maxillipedes is very much 

 developed ; it is rounded anteriorly, where it exceeds 

 the level of the front ; its antero-external angle, which 

 is obtuse, is much prolonged. The following joints 

 are compressed and flat. The fingers of the pincers 

 are very long and feeble ; the walking legs are thin 

 and flat. 



The abdomen of the male is narrow. The sternum is 

 flat and wide ; the median suture is extended upon the 

 four last sediments. 



I. Lupa forceps. 



Lupa forceps . . . Leach, Desmarest, Latreille, H. 



Milne Edwards, A. Milne 



Edwards. 

 Portunns forceps . . Fabricius, Herbst, Latreille. 



In male adults the carapace is very flat, slightly 



hexagonal, and very finely granular. The posterior 



border is very wide ; the antero-lateral borders are armed 



with eight very small teeth, pointed and separated by 



13 



