432 ON ILYOPSYLLUS COKIAC£US AND OTHEK CKUSIAOEA 



Isopoda. Idotea grauulata, Rathke. 



Joera marina, Linn. 

 Copepoda. '''Eurytemora elausii (Hoek). 

 *Acartia elausii, Giesbrecht. 



Parapontella brevicornis (Lubbock). 



Cyclops salinus, sp. n. 



Cyclopina littoralis, G. S. Brady. 



Ectinosoma melaniceps, Boeck. 

 ^'Delavalia palustris, G. S. Brady. 

 ^■Platychelipus littoralis, G. S. Brady. 



Stenhelia limicola, sp. n. 



Dactylopus longirostris ? Glaus. 



Thalestris mysis, Glaus. 

 ,, peltata (Boeck). 



Idya furcata (Baird). 



Harpacticus chelifer (Miiller). 



Zaus spinosus, Goodsir. 



Laoplionte similis (Claus). 

 *Ilyopsyllus coriaceus, B. & R. 



Echinocheres violaceus, Claus. 



Cyclopicera berniciensis, sp. n. 



Artotrogus boeckii, G. S. Brady. 



COPEPODA. 



Series 1. Gnathostomata. 



Cyclops salinus. sp. n. (Plate XIL, figs. 11 — 15). 

 Anterior antennae ten-jointed (fig. 11), the first three joints 

 very imperfectly separated; lengths of the joints as in the fol» 

 lowing formula — 



1234 .5 6789 10 

 3 3 3 2 2 10 4 2i 2^ 3 



bearing a few short hairs towards the apex; posterior antennae 

 simple, three- jointed, without any lateral branch (fig. 12). 

 Swimming feet very short and stout, all the branches three- 

 jointed (figs. 13, 14), the terminal joints much dilated, not 

 much longer than broad. Abdomen (fig. 15) slender, elongated, 



