COPEPODA. 243 



Paracalanus parvus (Glaus). 



One of the most widely distributed species throughout the regions traversed. 

 Occurred at 65 statious, extending from the British coasts to the ( !eylon pearl hanks. 



Paracalanus crassirostris, F. Dahl. 



Found at 16 stations, all in the sea round Ceylon ; not previously known from the 

 Indian Ocean. 



Metacalanus aurivillii, Gleve Plate II., figs. 18 to 20. 



Occurred at 27 stations, all in the sea round Ceylon ; previously known only from 

 the Malay Archipelago. We show the female abdomen and the male and female 

 fifth natatory legs of this species, as they are not represented in sufficient detail by 



( 'LEVE. 



Acrocalanus gibber, Giesbr. 

 Found sparingly at 4 stations, from the Gulf of Suez and Indian Ocean. 



Acrocalanus longicornis, Giesbr. 



A much commoner species than the preceding, occurred at 33 stations, extending 

 from the Red Sea throughout the Indian Ocean and around Ceylon. 



Acrocalanus gracilis, Giesbr. 



Occurred at 9 stations ; general distribution similar to that of the two preceding 

 species. 



Acrocalanus monachus, Giesbr. 

 A few specimens of this rarer form were found at 2 stations between Minikoi and 

 Sokotra. Previously known from the Pacific and Indian Oceans. 



Calocalanus pavo (Dana). 



This beautiful species, easily recognised by its elegant plumose furcal setae, 

 although rarely found perfect, has a wide range throughout the Atlantic, Pacific and 

 Indian Oceans, and occurred at 33 stations, extending from Gibraltar through the 

 Mediterranean, Red Sea, Indian Ocean, and around ( 'eylon. 



Calocalanus plumulosus (Glaus). 



Similar in distribution to the last species, but less common. It occurred at 

 12 stations. 



Clausocalanus furcatus (Brady). 



Well distributed throughout the entire traverse, occurring at 47 stations. 



2 i 2 



