obtained during the Cruise of the ‘ Oceana.’ 23 
6-jointed. Outer branch of first to fourth pair of swimming- 
feet 3-jointed. Inner branch of first pair 1-jointed, but 
double-lobed, as in Gaétanus. Inner branch of second pair 
(fig. 8) 2-joimted, and that of the third and fourth pairs 
3-jomted. Fifth pair 2-branched (fig. 9), each 3-jointed, 
including basal joint, the apical joint of the right branch 
having four spines, the left three spines, the first two joints 
of each branch having their inner edges lined with short 
strong spines. Abdomen 4-joiuted, the last very small ; 
caudal segments somewhat quadrate, nearly twice as long as 
broad. 
One specimen only (a female) was found at 1510 fathoms, 
and it is with extreme pleasure that I name it after 
Dr. Giesbrecht of Naples, whose colossal and magnificent 
book, as well as his many lesser writings, and personal 
friendship when at Naples on various occasions, have heen 
of the greatest service to me. 
Phaénna spinifera, Claus. 
1863. Phaénna spinifera, Claus, Freileb. Cop. p. 189. 
A fair number of this widely distributed species were taken 
at seven stations, at depths varying from 270 to 1610 fathoms. 
Centropages typicus, Kroyer. 
1848. Centropages typicus, Kyoyer, Naturh. Tidsskr. n. ser, vol. ii. 
p- 588. 
This well-known British species, whose further known 
range is the Mediterranean and the Atlantic Ocean, occurred 
at five stations in this collection at depths of from 270 to 
1670 fathoms. 
Centropages Chierchie, Giesbrecht. 
1889. Centropages Chierchie, Giesbrecht, Atti Acc. Lincei Rend. 
ser. 4, vol. v. p. 811. 
One specimen was taken by the surface-net. Its only 
previous record is from the Straits of Gibraltar. 
Centropages hamatus, Lill). 
1853. Ichthyophorba hamata, Lill}. Clad. Ostr. Cop. p. 185, 
Another of our common British species, also previously 
recorded from the Atlantic and from its first-known habitat, 
the Baltic. It occurs at four stations in the ‘Oceana’ 
collection, from the surface to 270 fathoms. 
