FEOM THE GULF OF GUINEA. Ill 



in 81 of the tow-nettiugs, wliich comprised 42 surface aud 3i) iinder-surface gatherings. 

 The under-surface tow-nettings ranged in depth from 2 to 360 fathoms. 15 of the 

 surface and 30 under-surface tow-nettings were day collections, while 27 surface and 9 

 under-surface were night collections, as shown in the formula :— 



r 15 day collections, 

 r -12 surface { 37 ^^.^ ditto. 



Tow-ncttmgs 81 < ^„^ 1 ■,-,, 



1 39 under-surface / ^0 day ditto. 

 (. 9 night ditto. 



The distrihution of Corycceus pelbicidus was co-extensive "with the area examined. 

 The long spine-like and strongly setiferous hairs of the posterior foot-jaws form an easily 

 recognized character of this species. 



CoRTC^us LIMBATUS, Brady. 



1883. Conjcceus Umbatus, Brady, Report Chall. Copep. p. 114, pi. xlix. figs. 18-22. 



Habitat. Station 2, night collection. January 1st. Station 9, 50 fathoms, January 10th 

 (day collection). Station 11, 10 fjxtlioms, January 19th (day collection). Lagoon, Sfio 

 Thome Island, surface, January 27th (night collection). Lat. 7° 38' S., long. 12° 3' 3" E., 

 surface, February 9th (night collection), &c. 



Corycceus Umbatus was obtained in 25 tow-nettings, 10 of which were surface and 15 

 under-surface gatherings. The dejith of the under-surface toAv-nettings ranged from 

 2| to 50 fathoms, exclusive of two, one of which was from 260 fathoms and one from 

 360 fathoms. 4 of the surface and 10 of the under-surface tow-nettings — including the 

 two specially referred to — were day collections, while 6 of the surface and 5 of the under- 

 surface were night collections, as shown by the formula : — 



4 day collections. 



f 4 day collect: 

 10 surface | 6 night ditto 



{'I 



Tow-nettings 25 , ,^ , 



[15 under-surface f 10 ^^y^^itto. 



5 night ditto. 



This Corycceus, though generally distributed over the area examined, was nevertheless 

 a comparatively rare species, only a few specimens at most being observed in any one 

 of the tow-nettings in which it occurred. 



CoKYC^us VENUSTUS, Dana. 



1852. Corycmis venusfus, Dana, Crust. U. S. Expl. Exped. p. 1222, pi. Ixxxvi. figs. 4 a-d. 



1883. Corycmis renu.stus,V,xa.Ay, Report Chall. Copep. p. 115, pi. liv. figs. 8-10. 



Habitat. Station 2, surface, January 1st (night collection). Station 9, surface and 

 25 fathoms, January 10th (day collections). Lat. 1 55' 5" N., long. 5° 55' 5" E., 30 and 

 460 fathoms, January 22nd (day collections). Lat. 6 23' 3" S.,long. 11° 3' 8" E., surface, 

 February 8th (day collection). 



This species — one of the rarer of the CorycmidcB in the collection — was obtained in 

 24 tow-nettings, 13 of which were surface and 11 under-surface gatherings. The 



