20 



A sharp tooth on sloping sides of carapace, on branchial 

 regions; another tooth on pterygostomial regions, on either 

 side of buccal cavern. Eyes, like antennae and antennulae, 

 completely hidden beneath the front E. filholi de Man 



3. Front truncate E. triincata A. Milne-Edwards 



Front shortly trianijular 4 



4. Front somewhat deflexed; borders of carapace and legs wholly 



beset with numerous stiff hairs, much resembling spines, 



but flexible on the legs E. pilosa A.Milne-Edwards 



Front horizontal, lamellar; legs naked or sparsely hairy. . 5 



5. Carapace narrowed into a "neck" anteriorly, upper part of 



carapace and all the legs more or less hairy .... 6 

 Antero-lateral parts of carapace not forming a "neck", cara- 

 pace and legs wholly hairless (save the dactyli of the latter) 7 



6. Carapace somewhat angular, neck very long; rostrum con- 



siderably projecting beyond the eyes, not excavated at 



upper surface e. longirostris Filhol 



Carapace rounded, neck shorter; rostrum scarcely projecting 

 beyond the eyes, leaving the eye-stalks e.xposed from above, 

 strongly excavated at upper surface E. whitei Miers 



7. Carapace rounded, not angular, broadly piriform; front very 



broad between the eyes e. sindensis Alcock. 



Carapace more or less angular g 



8. Posterior lateral sides of carapace and posterior border nearlv 



straight or slightly concave, meeting at distinct angles . 9 

 Posterior lateral sides of carapace and posterior border formino- 



together a semicircle , 



10 



9. Carapace pentagonal, anterior part triangular, antero-lateral ^ 



prominence scarcely indicated, posterior angle (above base ; 



of cheliped) pronounced ^. -r^r^7/> Borradaile 



Carapace heptagonal, owing to the antero-lateral anMe beina i 



promment; sides concave between the posterior and 

 anterior angle '), and between the latter and the base of 



'''^ '■°=^^''"'" E. kirki Filhol 



10. Carapace with one pair of angles; rostrum small, little \ 



E. mathaei (Desmarest) ! 



Carapace with two pairs of much prominent angles; rostrum ; 



^^^^^broaOnuch prominent e producta Kirk " 



specimen (0)u mZ\^1'^, '" /?"" ^^l' «V' [ '^ ''^ '"""" '^ ^•^°"°- ^"''^^^' '" '''^ "?'=>-"- °f P'^^'es, another 



P UJ referred to the p.e.ent spec.es (pi. 47, f. 8). though only the anterior angle of the carapace is indicated. 



20 



