400 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



*13. 7-15 p.m., 27.3.01 to 6-10 a.m., 28.3.01. Wind East, sea calm. 



14. 9-15 a.m. to 6-0 p.m., 28.3.01. Position of .ship atnoonl0°35'N., 



60°22'E. Wind E.N.E., sea calm. 



15. 9-0 a.m. to 6-0 p.m. 29.3.01. Position of ship at noon 9°36'N., 



65°56'E. Wind E.N.E., sea calm. 

 *16. 7-15 p.m., 29.3.01 to 6.30 a.m., 30.3.01. Wind E.N.E., sea calm. 

 17. 9-15 a.m. to 6-20 p.m., 30.3.01. Position of ship at noon 8°37'N., 



71°27' E . Wind E . , sea calm. 

 *18. 7-30 p.m., 30.3.01 to 6-50 a.m., 31.3.01. Wind E., slight swell. 

 19. 9-0 a.m. to 6-0 p.m., 31.3.01. Position of ship at noon 7°21'N., 

 76°53'E. Wind E., slight swell. 



* For the sake of simplicity, the night gatherings are marked with an asterisk. 



Notes ox the Copepoda. 



Calanus pauper, Giesbrecht. 

 Occurrence, Nos. 1, 2, 4, 5, 6, 7, 8, 9, 11, 13, 14, 15, 16, IT, 

 18, 19. 

 This species has already been recorded from the Red 

 Sea, &c, by Mr. Thompson, (Trans. L'pool Biol. Soc, 

 Vol. XIY., p. 275), and from the Pacific Ocean by Dr. 

 Giesbrecht. 



Calanus vulgaris (Dana). 

 Occurrence, Nos. 4, 6, 7, 8, 9, 13, 14, 1G, 17, 18. 



A widely distributed and sometimes very common 

 species in tropical and sub-tropical collections of Copepoda. 



Calanus darwini (Lubbock). 

 Occurrence, Nos. 14, 18. 



There is no difficulty in recognising the adult female of 

 this species, which has the last thoracic segment con- 

 siderably prolonged on the left side, but immature females 

 present some difficulty owing to the last thoracic segments 

 ending in a minute tooth, as in Calanus jwojnnquus. There 

 is, however, a considerable difference in size between the 

 two species. Calanus carol i, Giesbrecht, of which only 



