20 



The British Oceanic Entomostraca. 



Muller ; H. nobilis, Baird ; Alteuiha depressa, Baird ; Temora 

 Finmarchica, Gunner ; Anomalocera Patersonii, Templeton ; 

 Cetochilus septentrionalis, Goodsir. An eleventh species (Noto- 

 delphys ascidicola, Allman) is also provisionally included by Dr. 

 Baird aniongst the Copepoda, but this little parasite is now 

 classed with the fish lice in the order Pascilopoda. 



More recently eight additional species have been described 

 by Mr. Lubbock in the Annals and Magazine of Natural 

 History (second series, vol. xx.) Of these, however, three are 

 probably referable to previously published species, and one 

 (Monstrilla anglica) is imperfectly known, and may very likely 

 be found to belong to the order Pgecilopoda. 



If to these we add Peltidium purpureum, Philippi, and 

 Hersilia apooliformis, Philippi (two species first recognized as 

 British by Mr. Spence Bate), a few others noticed by myself 

 in Reports presented to the British Association and to the 

 Tyneside Naturalists' Field Club, in 1863 ; lastly, eight species 

 recorded for the first time in this paper, we shall have, I think, 

 a complete list of all the known British marine species belong- 

 ing to the two orders Cladocera and Copepoda. 



To facilitate reference, I insert first a classified list of the 

 British species, as far as our present knowledge extends, pro- 

 ceeding afterwards to notice more in detail those which are 

 new to our fauna. * 



Order CLADOCERA. 



Fam. POLYPHEMID.E. 



Evadne IsTordmanni, Loven. 

 „ polyphemoides, Leuck- 

 art. 



Order COPEPODA. 



Fam. Haepactid^. 



Tachidius brevicornis, Muller. 

 Tisbe furcata, Baird. 

 Westwoodia nobilis, Baird. 

 Dactylopus Stromii, Baird. 



,, tisboides, Glaus. 



Thalestris longimaxia, Glaus. 

 Harpacticus chelifer, Muller. 



Fam. Peltidime. 

 Peltidium purpureum, Philippi. 



(? Oniscidhim, Glaus.') 

 Hersilia apodiformis, Pliilippi. 

 Alteutha depressa, Baird. 



„ bopyroides, Glaus. 

 Zaus spinosus, Claus. 

 „ ovalis, Goodsir. 



Fam. Coizxcmivm. 



Monstrilla anglica, Lubbock. 

 Corycfeus anglicus, Lubbock. 



Fam. Calanid^;. 



Cetochilus septentrionalis, Good- 

 sir. 

 Calanns anglicus, Lubbock. 



„ Clausii, Brady. 

 Dias longiremis, Liljeborg. 

 Temora Finmarchica, Gunner. 



„ velox, Liljeborg. 

 Ichthyophorba denticornis, 



Claus. 

 ,, hamata, 



Liljeborg. 



Fam. PONTELLID-ffi. 



Anomalocera Patersonii, Tem- 

 pleton. 

 Pontella brevicornis, Lubbock. 

 „ Wollastoni, Lubbock. 



