AUSTBALIAN MALACOSTEACA. 151 



Sub-Tribe Hippidea. 

 Carapace oblong, convex, and rounded above. Either the 

 external or internal antennae very long. External maxillipedes 

 somewhat operculiform, with the terminal joints considerably 

 developed. First pair of legs monodactyle or subchelate, the 

 three following pairs with the terminal joints more or less 

 expanded, lamellate. Fifth pair of legs filiform, inflexed. 



Genus Remipes, Latr. 

 Carapace regularly oval, less than one and a quarter times as 

 long as broad. Front rather wide and truncate. External angle 

 of the orbit much more prominent than the front. Eyes scarcely 

 retractile, peduncle composed of two mobile portions. Internal 

 antennas inserted beneath the eyes, large, with long, multi- 

 articulated flagella. External antennae short and very broad. 

 External maxillipedes short and broad, with the third joint oper- 

 culiform, the three terminal joints constituting a semi-prehensile 

 organ. Anterior legs very long, broad at base, terminal joint 

 styliform, acute, and slightly flattened, terminal joints of the 

 next two pairs expanded and lamellate, of the fourth pair nearly 

 conical. Fifth pair of legs slender and concealed beneath the 

 carapace. Sternum linear. Abdomen long, terminal segment 

 far exceeding in length the rest of the abdomen. 



286. Remipes testudinarius. 



Hippa adactyla, Fabr., Suppl., p. 370. 



Cancer emeritus, Herbst, p. 8, pi. xii., fig. 4. 



Bemipes testudinarius, Milne-Edwards, Hist. Nat. Crust., ii., 

 p. 206, pi. xxi., figs. 14-20. 



Carapace covered with small, transverse, short and arched, 

 crenulated striae. Front excavated in the middle, and less pro- 

 minent than the external orbital angle. Lateral borders of the 

 carapace thin, and surmounted by a groove ornamented with very 

 short fasciculi of hairs so as to appear denticulated. The length 

 of the anterior limbs varies according to the sex. [M.-H.] ' ,J 



Section ANOMOUEA SUBMEDIA. 

 Eyes distinctly in front of the first pair of antennae. Abdomen 

 much dilated, inflexed, but not closely appressed, without caudal 

 appendages. 



