144 FLABELLIFERA • CIROLANIDAE 



Key to genera of Eurydicinae {Continued) 



3. Pleon of five free pleonites plus pleotelson 4 



Pleon of three free pleonites plus pleotelson Colopisthus 



4. Endopods of pleopods 3-5 lacking marginal setae, or with no more 



than three marginal setae; copulatory stylet of endopod of pleopod 2 



in S articulating subterminally Arubolana 



Marginal setae lacking only on endopod of pleopod 5; copulatory stylet 

 of pleopod 2 endopod in S articulating basally Metacirolana 



5. Clypeus conical; uropodal endopod lacking notch in outer distal margin 



Xylolana 



Clypeus flattened; uropodal endopod with notch in outer distal margin 

 Excirolana 



Arubolana Botosaneanu and Stock, 1979 



DIAGNOSIS Animal not able to conglobate. Blind, or with very small eyes. 

 Anterior margin of frontal lamina broad. Antennular peduncle of three arti- 

 cles. Maxillipedal palp of four articles (articles 2 and 3 fused). Maxilla 2 

 reduced, endite unarmed, exopod with few marginal setae. Pereopods 1 and 

 2 and sometimes pereopod 3 prehensile; pereopods 4-7 ambulatory. 

 Pleopods 1 and 2, rami undivided. Pleopod 2 S with copulatory stylet artic- 

 ulating subterminally on endopod. Pleopods 3-5, exopods biarticulate; endo- 

 pods lacking marginal setae, or with few setae on endopods of 3 and 4; 

 pleopod 5 exopod with marginal setae interrupted. 



Key to species of Arubolana 



1 . Eyes present, small parvioculata 



Eyes absent 2 



2. Pleotelson posteriorly rounded; rostrum not distinct in dorsal view 



aruboides 



Pleotelson posteriorly subtruncate; rostrum distinct in dorsal view 



imula 



