250 Ceylon pearl oyster RePOrT. 



Family : PSEUDOCYCLOPIDyE. 



Pseudocyclops obtusatus, Brady and Robertson. 



A few specimens only were obtained in the northern Indian Ocean and about the 

 pearl banks and Cheval Paar, Ceylon. 



The British coast appears to be the only previously recorded habitat. 



Family: CAKDACIllLE. 



Candacia armata (Boeck). 



Taken only in the first gathering, between the English Channel and Gibraltar. It 

 is probable that the tropical records of this sj>ecies, long known as C pectinata, 

 Brady, refer to other Candacias, as more than one species is included in the figures 

 of C. pectinata in the Report on the " Challenger" Copepoda, but none of them are 

 identical with Boeck's C. armata, 



Candacia simplex (Giesbr.). 



Occurred at 19 stations, from the Mediterranean onwards through the Indian Ocean 

 and at several of the Ceylon stations. Not before recorded from the Indian Ocean. 



Candacia bispinosa (Claus). 



Found on three occasions in the Mediterranean and the Red Sea. Previously 

 reported from the Indian Ocean. 



Candacia bradyi, A. Scott. 



Occurred at 8 stations, extending from the Gulf of Suez into the Indian Ocean. 

 Mr. Scott's previous record was from Aden. It is probable that some of the 

 previous records of C. pectinata from tropical seas are really this species. 



Candacia truncata (Dana). 



Occurred at 18 stations, from the Gulf of Suez onwards through the Indian Ocean 

 to Ceylon. 



Candacia catula (Giesbr.). 

 Occurred at 17 stations, the range being similar to that of the preceding species. 



Candacia longimana (Claus). ' 



Obtained at 3 stations only, from the south of the Red Sea and from Perim into 

 the Indian Ocean. 



Candacia sethiopica (Dana). 

 Range of this species is similar to that of C. catula ; obtained at 17 stations. 



