Cyathura (Stygocyathura) hummelincki 35 



TABLE 1. CARIBBEAN SPECIES OF Cyathura (Stygocyathura) , their total LENGTHS 

 (mm) and LOCALITIES 



10 pectinate marginal spines; low triangular ridge present. Pleotelson evenly 

 tapering to notched apex; angle of apex about 90°. 



RECORDS Oriente Province, Cuba, interstitial in river alluvia. 



Cyathura (Stygocyathura) curassavica Stork, 1940 

 Figures 1 1E,F; 12 



DIAGNOSIS 6 7.0 mm, 9 9.2 mm. Pereopod 1, propodal palm gently con- 

 vex, bearing about 10 pectinate spines. Pleotelsonic margins in anterior two- 

 thirds subparallel, tapering gently to finely notched apex; angle of apex less 

 than 90°. 



RECORDS Curasao, from pits and wells. 



Cyathura (Stygocyathura) hummelincki Botosaneanu and Stock, 1982 

 Figure 11G,H 



DIAGNOSIS 6 4.75 mm, 9 8.5 mm. Pereopod 1, propodal palm gently sinu- 

 ate, bearing 11-23 marginal pectinate spines. Pleotelsonic margins faintly 

 concave in midregion, posterior margin evenly convex, apex with slight 

 notch. 



RECORDS Aruba, in pits, wells, and temporary water sources. 



