Aega (Aega) ecarinata 1 1 7 



Key to species of Aega (Aega) 



1 . Eyes contiguous deshaysiana 



Eyes separate ecarinata 



Key to species of Aega (Rhamphion) 



1 . Posterior margin of pleotelson distinctly dentate dentata 



Posterior margin of pleotelson at most faintly crenulate tenuipes 



Aega (Aega) deshaysiana (H. Milne Edwards, 1840) 

 Figure 51 A 



DIAGNOSIS 9 18.0 mm. Eyes large, contiguous. Cephalon with frontal mar- 

 gin acute to subacute. Frontal lamina large, shield shaped. Antennular ped- 

 uncle articles 1 and 2 not expanded; flagellum of more than 15 articles. 

 Uropodal endopod with deep notch in lateral (outer) margin. Pleotelson with 

 basal width subequal to middorsal length, triangular, lateral margins faintly 

 to markedly convex, tapering to narrowly rounded to subacute apex. 



RECORDS Cuba; Yucatan Peninsula, Mexico; Gulf of Mexico. 

 Azores; Cape Verde Islands; Tristan da Cunha; Mediterranean; St. Paul and 

 Amsterdam Islands; Seychelles; east coast of South Africa; Philippines; Ja- 

 pan; Hawaii; northeast Australia; Tasmania; Cocos Islands; Costa Rica. 



REMARKS This species is more familiarly known in the Caribbean region as 

 Aega antillensis Schioedte and Meinert, 1879. 



Aega (Aega) ecarinata Richardson, 1898 

 Figure 51 B 



DIAGNOSIS 9 21.0 mm. Eyes well separated. Articles 1 and 2 of antennular 

 peduncle expanded. Propodus of pereopod 3 with posterodistal lobe. Uropo- 



