COPEPODA. 255 



Oithona plumifera, Baird. 



A common species, recorded from 40 stations almost continuously throughout the 

 seas traversed. 



Oithona similis, Clatts. 

 Commencing at the Gulf of Suez, this species occurred at 88 stations ; similar in 

 distribution to 0. plumifera. 



Oithona minuta, T. Scott. 

 This species, first recorded from the Gvdf of Guinea, appears to be abundant 

 throughout the Indian Ocean and round Ceylon, occurring at 35 stations. 



Oithona rigida, Giesbr. 

 Occurred in the Red Sea, about Minikoi, and at 18 stations around Ceylon. 



Oithona spinifrons, Boeck. 



This common British species, closely allied to 0. similis, occurred in the earlier 

 gatherings, and in the Red Sea and Northern Indian Ocean, to Ceylon. 



Oithona nana, Giesbr. 

 Occurred at 3 stations on the Pearl banks, Ceylon. 



Oithona setigera, Dana. 

 Taken on 4 occasions in the Mediterranean and once in the Suez Canal. 



Family: ASCIDICOLIDiE. 

 Doropygus normani, Brady. 



A few specimens were taken from the branchial sac of a species of Cynthia found 

 at the Aripu reef, Gulf of Mauaar. 



Doropygus pulex, Thorell. 



Found attached to the branchial sac of a species of Molgula. from the Cheval and 

 Periya paars, Ceylon. 



Botryllophilus ruber, Hesse. 

 Found in washings from sponges, Gulf of Manaar, 



Family : HARPACTICID.F. 

 Sunaristes paguri, Hesse. 

 A few specimens were found in the general washings from Ceylon Invertebrates. 



