SURFACE COPEPODA OF THE GTJLF OF MANNAR. 209 



This species was first obtained from the Burmese coast ; 

 a few examples occurred in the collections from the pearl 

 banks, which undoubtedly belong to the same species ; they 

 however, differ slightly from the Burmese specimens in that 

 the terminal segment of the first antenna is somewhat longer 

 in proportion to the preceding segments, but in all other 

 respects these examples agree with the tjrpe specimens. 



Genus Acrocalanus, Giesbrecht. 



AcROCALANUS LONGicoRNis, Gicsbrecht. 



Acrocalanus longicornis, Giesbrecht, 1888, p. 332 ; Gies- 

 brecht, 1891, p. 282. 



Cleve, 1901, p. 5. 



Thompson & Scott, 1903, p. 243. 



Wolfenden, 1905, p. 1000. 



Scott, 1909, p. 28. 



SeweU, 1912, p. 358. 



Pesta, 1913, p. 13, fig. 14. 



Examples of this species were fairly plentiful ; it appears 

 to have a wide distribution in Indian seas. 



Acrocalanus gracilis, Giesbrecht. 



Acrocalanus gracilis, Giesbrecht, 1896, p. 318. 



Cleve, 1901, p. 4. 



Thompson & Scott, 1903, p. 243. 



Cleve, 1903, p. 356. 



Cleve, 1904, p. 184. 



Wolfenden, 1905, p. 1003. 



Scott, 1909, p. 29. 



Sewell, 1912, p. 359. 



This species was by no means common in the collections 

 all the examples obtained were females. 



