NON-PABASITIC MARINE COPEPODA. 427 



Hab. — Bridlington Bay, several specimens taken in the towing 

 net by Mr. E. C. Davison. On weeds in Roundstone and Clif- 

 den Bays, Ireland (G. S. B.). 



The most distinguishing characters of this fine species are the 

 auditory setae, with which the upper antennae are on their basal 

 portions thickly clothed, and the broadly laminar construction 

 of the fifth pair of feet, more especially in the male sex. 



Genus CENTROPAGES, Kroyer. 



(ICHTHYOPHORBA, LiUjeborg ; CALANOPIA, Dana; 

 CATOPIA (?), Dana). 



1. Centeopages typicus, Kroyer. 



C. typicus, Kroyer (1849), Nat. Tidskr. Anden. Raskke andet 

 Bind. Side 288. Boeck (1864), Oversigt over de ved 

 Norges Kyster iagttagne Copepoder, p. 19. 



Iclitlvxjopliorba denticornis, Claus (1863), Die frei lebenden 

 Copepoden, p. 199, PI. XXXV., figs. 1, 3-9. Brady, 

 Nat. Hist. Trans. N. & D., Vol. I., p. 40, PI. IV., figs. 

 1-6. 



This species occurs not uncommonly in surface net gatherings 

 from the open sea, but never in very great numbers so far as 

 my observation extends. I accept Boeck's identification of the 

 species with C. typicus of Kroyer, but without the opportunity 

 of myself referring for verification to the original description. 



2. Centeopages hamatus, (LiUjeborg.) 



Ichthyophorba hamata, LiUjeborg (1853), De crustaceis, &c, 

 p. 185, T. XXI., figs. 1-5, 7-9, and T. XXII., figs. 

 9-12 ; Brady, Nat Hist. Trans. N. & D. (1865), Vol. I., 

 p. 39, PL IV., figs. 7-10. 



I. angustata, Claus (1863), Die frei lebenden Copepoden, p. 

 199, T. XXXV., figs. 2, 10-12. 



Diaptomus Bateanus, Lubbock (1857), Ann. and Mag. Nat. 

 Hist. (2nd ser.), Vol. XX., p. 404, PI. XL, figs. 1-3. 



