Paradella 223 



m, from green alga Halimeda sp. on forereef, and from sponge Aphysina 

 Jistularis. 



Paracerceis nuttingi (Boone, 1921) 

 Figure 97H 



RECORDS Barbados; Puerto Rico, 1.5 m, from Cymodocea seagrass, and coral 

 rubble and sponges. 



REMARKS The types of this species from Barbados consist only of females 

 (total length 4.1 mm). Menzies and Glynn (1968) record an immature male 

 from Puerto Rico with an incipient pleotelsonic notch. This specimen, how- 

 ever, still has the subequal lamellar uropodal rami. The mature male, with 

 the characteristically reduced uropodal endopod and cylindrical exopod, is 

 unknown. The possibility exists that this is not a true Paracerceis. 



Paradella Harrison and Holdich, 1982 



DIAGNOSIS Both sexes lacking processes on pereon and pleon. Marked sex- 

 ual dimorphism. Accessory unguis of pereopods simple, not bifid. Pleopod 3 



Key to species of Paradella 



1. Pereonite 7 with projecting bilobed flange; pleon and pleotelson finely 



but distinctly granulate 2 



Pleon and pleotelson smooth 3 



2. 6 with pleotelsonic foramen distinctly heart shaped, with median 



point; four submedian tubercles of pleotelson in S and 9 somewhat 

 elongate; 9 pleotelson posteriorly narrowed, slit visible dorsally 



dianae 



6 with pleotelsonic foramen wider than long, but lacking median 

 point; four submedian tubercles of pleotelson in 6 small, rounded, 

 obscure in 9; 9 pleotelson posteriorly truncate, slit not visible 

 dorsally plicatura 



3. Tubercles on pleotelson in 6 and 9 small to obscure; S with 



pleotelsonic foramen subcircular quadripunctata 



Tubercles on pleotelson broadly rounded mounds in 6 and 9 ; 6 with 

 pleotelsonic foramen wider than long tumidicauda 



