FEOM THE GULF OF GUINEA. bl) 



1852. Pon fella turgida, ^, Daua, loc. cit. p. 1136, pi. kxix. figs. 11 a, b, figs. 12 a, b. 

 1883. Pontella plvmata, Brady, Report Chall. Copep. p. 92, pi. xxxvii. figs. 1-11. 



Habitat. Station 3, 25 fathoms, Janviary 2iul (day collection). Station 9, 25 fathoms, 

 January 10th (day collection). Lat. 1° 55' 5" N., long. 5° 55' 5" E., 10, 20, 30, 200, and 

 360 fathoms, January 22nd (day collections). Station 23, 10 and 185 fathoms, February 

 5th (day collection). Lat. 8° 36' 8" S., long. 12' 57' E., surface, February 13th (day 

 collection), &c. 



Fontellina plnmuta occurred in 67 tow-nettings, 39 of which were surface and 28 

 under-surface gatherings. The under-surface gatherings ranged from 2^ to 360 fathoms ; 

 16 of the surface and 21 of the under-surface were day collections, while 23 surface and 

 7 under-surface were night collections, as shown by the annexed formula : — 



r 10 day collections. 



n. H- . J^'-^ ^^^^-f^^*^ 1 23 night ditto. 



Tow-nettmgs 67 < >- » 



L28 under-surface (21 f^ay ditto. 

 1 7 night ditto. 



This species was abundant in the ' Buccaneer ' collection, l)oth sexes being frequent. 

 Its distribution was co-extensive with the area examined. 



Family CYCLOPID.E. 



Genus Oithona, Baird. 

 Oithona, Baird, Zoologist, 1843. 



OiTHONA Challengerii, Brady. 



1883. Oithona ChaUengerii, Brady, Ecport Cliall. Copep. p. 97, pi. xl. figs. 1-10. 



Huhitut. Station 2, 5 ftithoms, January 1st (night collection). Station 9, 50 fathoms, 

 January 10th (day collection). Station 18, surface, February 3rd (day collection). Station 

 23, surface, February 5th (day collection). Lat. 5" 53' S., long. 11' 31' 1" E., surface, 

 February 18th (night collection), &c. 



0. ChallemjerU seemed to be distributed all over the area examined ; in some tow- 

 nettings it was rather rare, but in others frequent. Considerable care was necessary in 

 diagnosing the species, owing to the close resemblance between it and others of the 

 same genus, and to their being so long immersed in spirit, which rendered it very 

 di£Bcult to make out the number of joints in the antennae. 



Oithona plumipera, Dana. 



1852. Oithona plumiftru, Dana, Crust. U.S. Expl. Expcd. p. 1100, pi. 76. 



Ilaliitat. Lat. 4 31' 6" K., long. 6 4'4" W., 25 fathoms, January lltli (day collection), 

 lat. 3' 58' N., long. 3 42' W., 50 fathoms, January 13th (day collection). Lat. 2 22' 2" S., 

 long. T 45' E., 20 fathoms, February 3rd (day collection). Station 21, surface, February 



SECOND SERIES. — ZOOLOGY, VOL. VI. 12 



