CYCLOPOIDS FROM LITTORAL CAVES 



85 



Fig. 2. Cyclopina esilis Brian, 

 mandibular exopod. 



1938. A and C-F. adult female. B. adult male. A, antenna; B, mandible; C, maxillule; D, maxilla; E. maxilliped; F. 



lows: segment 1 (corresponding to fused ancestral segments I and 

 II), 3 setae; segment 2 (corresponding to fused ancestral segments III 

 to V), 5 setae; segment 3 (fused segments VI to IX), 8 setae; segment 

 4 (fused segments X and XI), 4 setae; segment 5 (fused segments XII 

 to XIV), 6 setae; segment 6 (fused segments XV to XX, partial 

 suture present between segments XVI and XVII), 6 setae + aesthetasc; 

 segment 7 (fused segments XXI to XXIII), 3 + aesthetasc; segment 

 8 (XXIV), 2 setae; segment 9 (XXV), 1 + aesthetasc; segment 10 

 (fused segments XXVI to XXVIII), 7 + aesthetasc. 



Antenna (Fig. 2A) 4-segmented. Fused coxa and basis short, 

 about 1.5 times longer than wide, armed with 1 inner basal seta 

 distally and 1 long seta (representing exopod) on outer margin. 



Endopod 3-segmented. Proximal segment with 1 seta at about two- 

 thirds of distance along inner margin; segment covered by long 

 spinules on anterior surface. Second segment with 2 lateral and 3 

 distal setae (one of them claw-like) along inner margin. Distal 

 segment with 7 distal setae, one of them claw-like. Secondary 

 ornamentation on segments as figured. 



Mandible (Figs 2B, F) with gnathobase armed with 10 unequal, 

 sharp teeth plus 1 dorsal seta; row of 1 3 spinules located subdistally. 

 Palp well developed; basis elongate, with patch of setules and 1 

 subdistal seta along inner margin. Exopod (Fig. 2F) inserted at about 

 midway of distance along outer margin of basis; 4-segmented; setal 

 formula 1,1,1,2; distal, brush-like seta somewhat shorter and thicker 



