EUEOPEAN FORMS OF THE CIROLANIN^, 341 



■§§ Upper margin of eyes convex. Four posterior 

 pairs of thoracic epimera each Avith a con- 

 spicuous oblique furrow besides the furrow 

 along the lower margin. 

 t Eyes black. Seventh thoracic legs closely set 

 with natatory sette along the whole inner 

 margin of second joint. Hind margin of last 

 abdominal segment with only two pairs of 

 spines. Endopod of uropods somewhat more 

 than two and a half times as long as broad. 



2. C. gallica, n. sp. 

 ft Eyes light brownish or colourless. Seventh 

 thoracic legs without setee along the major 

 portion of inner margin of second joint. 

 Hind margin of last abdominal segment with 

 five or six pairs of spines. Endopod of uro- 

 pods slightly more than twice as long as 



broad 3. C. neglecta, H. J. H. 



/3. Seventh thoracic legs have the second joint about 

 three and a half times as long as broad, and on 

 its outer margin only a few short setae ; fourth 



joint much longer than sixth 6. C. microphthalma, 



b. No eyes. [Hoek. 



a. All six pairs of thoracic epimera with the oblique 



furrows well developed 4. 'C Schmidtii, n. sp. 



i8. All six pairs of thoracic epimera without furrows. 



5. (^ cceca, DoUf. 



B. Frontal plate at most half as long again as broad. Three 

 posterior pairs of thoracic legs without natatory setse, 

 or at most with a few plumose setse at the outer 

 margin of second joint. 



a. Frontal plate small, not visible from above, its lower 



surface without any impressed area. Clypeus 

 without any free process. Eyes rather large. 



7. C. Cranchii, Leach. 



b. Frontal plate very large, its front end visible from 



above ; its lower surface with a large oblong- 

 impressed area. Olypeus protruding freely in 

 front as a nearly lamellar process. Eyes small. 



8. C. Hanseni, Bonn. 



