132 FLABELLIFERA • CIROLANIDAE 



Calyptolana hancocki Bruce, 1985 

 Figure 57 



DIAGNOSIS 9 3.0 mm. Body dorsally strongly convex. Cephalon with small 

 rostrum curving ventrally to meet frontal lamina; latter pentagonal. Eyes 

 small, well pigmented. Coxae of pereonites barely produced. Pleonite 5 lack- 

 ing free lateral margins. Pleotelson with broadly rounded posterior margin. 

 Uropodal sympod produced along mesial margin of endopod; exopod 

 slightly less than half length of endopod; latter distally rounded. 



RECORDS Dominican RepubUc; Aruba Island, Netherlands Antilles, 43.2 



Cirolana Leach, 1818 



DIAGNOSIS Frontal lamina usually twice as long as wide, not projecting; 

 clypeus flat. Mandible with strong incisor, dentate molar, palp of three arti- 

 cles. Pereopods all ambulatory. Pleon consisting of five free pleonites plus 

 pleotelson, pleonite 5 overlapped laterally by pleonite 4. All pleopodal rami 



Key to species of Cirolana 



1 . Pleotelson posteriorly very broad to subtruncate 2 



Pleotelson posteriorly narrowed 4 



2. Uropodal endopod broad, distally rounded, lacking marginal spines 



obtruncata 



Uropodal endopod broad, distal margin having apical tooth or 



angle 3 



3. Posterior margin of pleotelson bearing spines; uropodal endopod not 



dentate minuta 



Posterior margin of pleotelson faintly crenulate, lacking spines; 



uropodal endopod strongly dentate crenulitelson 



4. Uropodal endopod evenly tapering to acute apex; uropodal exopod 



length about four times greatest width albidoida 



Uropodal endopod, outer margin convex; uropodal exopod length less 

 than four times greatest width parva 



