FEOM THE GULF OF GUINEA. 85 



Tliough the Labldocera now described differs in one or two points from Sir John 

 Lubbock's ir<i/rfocer« JDarwiml, especially in the number of joints of the apical portion of 

 the posterior foot-jaws, yet its agreement with that species is closer than with Labldocera 

 acutifrons, Dana ; the ' Buccaneer ' specimens have therefore been ascribed provisionally 

 to Lubbock's species. 



Labidocera acutifrons (Dana). 



1852. PonteUa acutifrons, Dana, Crust. U.S. Expl. Espcd. p. 1149, pi. Isxx. figs. Wa-h. 

 1883. PonteUa acutifrons, Brady, Report Chall. Copep. p. 91, ]A. xxsv. figs. 1-13. 



JIaUtat. Lat. 5° 10' N., long. 3° 50' 2" 'W., surface (close inshore), January 12th 

 (night collection). Near Appi (Porto Novo), surface, January 18th (day collection). 

 Libreville, Gaboon E-iver, surface, January 28th (two day collections). Bananah Creek, 

 Congo Eiver, surface, February 7th (day collection). Lat. T 54' 6" S., long. 12° 14' 7" E., 

 surface, February 9th (night collection). 



Tliis Labldocera was obtained in 21 tow-nettings, 20 of which were surface and 1 

 under-surface gatherings ; one of the under-surface gatherings was from 2J fathoms 

 (day collection), one from 3 fathoms (night collection), one from 10 fathoms (day 

 collection), and one from 50 fathoms (day collection). 10 of the surface-gatherings 

 were day, and 10 were night collections, as in the formula : — 



10 day collections. 



r iu Clay coiiecuc 

 r 20 surface j 10 night ditto. 



Tow-nettings 24 <^ r q i vff 



I 4 under-surface I 3 day ditto. 

 i- 1 niijht colL 



ight collection. 



Labldocera acutifrons was comparatively a rare species, though generally distributed 

 throushou.t the area examined. 



'a" 



Labidocera acuta (Dana). 



1859. PonteUa acuta, Dana, Crust. U.S. Expl. Exped. p. 1150, pi. Ixxx. figs. 12 a-c. 

 1883. Fontella acuta, Brady, Report Chall. Copep. p. 89, pi. xxxvi. figs. 1-12. 



Sabitat. Libreville, at the mouth of the Gaboon River. Only one or two specimens 

 of what appeared to be this species were obtained. 



Genus Pontella, Dana, 1846. 



Pontia, Milne-Edwards, Hist. Nat. des Crust. (1828). 



PonteUa, Dana (in part), Amer. Journ. Sc. (2) vol. i. (1816) ; Brady (in part), Eeport 'Challenger' 



Copcpoda, 1883; Giesbrecht, Fauna und Flora des Golfes von Neapel (Pelagische Copepoden), 



1892. 



Pontella inermis, Brady. 



1883. PonteUa inermis, Brady, Report Chall. Copep. p. 95, pi. xlv. figs. 10-15. 



Habitat. Lat. 5' 10' N., long. 3' 56' 2" W., surface (close inshore), January 12th 



