FEOM THE GULF OF GUINEA. 91 



OiTHONA SETiGERA, Dana. 



1852. Oiihona setigera, Dana, Crust. U.S. Expl. Exped. p. 1101, pi. ~G. 



Ilabitat. In tow-net gatherings from 50 fathoms, lat. 3 58' N., long. 3 42' W. 

 (temperature 61°' 15 P., sp. gr. 1-02531), collected between 8 a.m. and 1 p.m., January 

 13th ; and from 3G0 fathoms, lat. 1 55' 5" N., long. 5° 55' 5" E. (temperature about 

 43"^ P.), collected January 22nd. Oiihona setigera was also obtained in a few other 

 gatherings, but was much less frequent than Oithona Challengerii. 



Subfamily Longipediinjj;, Boeck. 

 Genus LoNGiPEDiA, Claus (1863). 



LONGIPEDIA MINOR, T. & A. Scott. (PI. XII. flgS. 10-13.) 



1882. Longipedia coronata, Giesbrccht, Die freileb. Copepodeu dcr Kieler Folircle, p. 99, pis. i., iv., xii. 

 1893. Longipedia coronuta, var. vii/ior, T. & A. Scot, Anu. Scott. Nat. Hist. vol. ii. pt. 2, p. 93. 

 1893. Longipedia coronata, var. in'inor, T. Scott, xi. Aim. Rept. Fishery Board for Scotland, pt. iii. 

 p. 200, pi. ii. figs. 1 1-20. 



Habitat. Lat. 1 55' 5" N., long. 5 55' 5" E., 460 fathoms, tow-net gathering, collected 

 January 22nd. Luanda Harbour, in three surface tow-net collections, Pebruary 15th. 

 Pour or five specimens in all were obtained ; they differed considerably from Longijjedia 

 coronata as described by Drs. Claus and Brady. 



Genus Microsetella, Brady & P^obertson (1873). 



Microsetella, Brady & Eobertson, Ann. & Mag. Nat. Hist. scr. 4, vol. xii. p. 130 (1873). 

 Ectinosoma, Brady (in part), Mon. Brit. Copepoda, vol. ii. p. 13; id. Report on tlie ' Cliallenger ' 

 Copepoda, p. 100 (1883). 



Microsetella atlantica, Brady & Robertson. 



1873. Microsetella atlantica, Brady & Robertson, Ann. & Mag. Nat. Hist. ser. 4, vol. xii. p. 130, 



pi. ix. tigs. 11-lG. 

 1880. Ectinosoma atlanticum, Brady, Mon. Brit. Copep. viii. p. 13, pi. xxxviii. figs. 11-19. 

 1883. Ectinosoma atlunticum, id. Report Cliall. Copep. p. 100, pi. iv. figs. 10-14. 



Habitat. Lat. T 33' N., long. 15' 18' W., surface, January 2nd (night collection). Lat. 

 3° 58' N., long. 3 42' W., 50 fathoms, January 13th (day collection). Lat. 1 55' 5" N., 

 long. 5° 55' 5" E., 460 fathoms, January 22nd (day collection). Lat. 6' 47' 5" S., long. 

 11' 30' 6" E., surface, Pebruary 8th (night collection), &c. 



Microsetella atlantica was observed in 40 tow-nettings, 19 of which were surface and 



21 undcr-surface gatherings; 4 of the surface and 15 of the under-surface gatherings were 



day collections, Avhile 15 of the surface and 6 under-surface were night collections, as 



shown by the annexed formula : — 



r 4 day collections. 



{10 surface { ik • i j. i-j-i 



1 15 night ditto. 

 21 under-surface 1 15 day ditto 

 t 6 night ditto. 



12* 



