340 DE. H. J. HANSEN ON THE 



B. Peduncle of antennae with only four distinct joints. 

 Lobe from second joint of the maxillipeds without 

 hooks *. Peduncle of uropods slightly produced 

 backwards, and the articulation between peduncle and 

 inner branch short , , III, Eurydice, Leach. 



I. ClKOLANA, Leach. 

 The characters of the genus are given iu the conspectus of the 

 genera. 



Conspectus of the Species. 

 A. Frontal plate elongate, at least nearly three times 

 longer than broad. Three posterior pairs and especially 

 seventh pair of thoracic legs with many long plumose 

 natatory setse. 

 a. Eyes very distinct, generally brownish or black, but 

 if colourless the facetting is seen. 

 a. Seventh thoracic legs have the second joint f 

 strongly flattened and expanded, at most only 

 twice as long as broad, with a close row of long- 

 natatory setEe along the outer margin ; fourth 

 joint not longer than sixth. 

 § Major portion of upper margin of the eyes straight. 

 Four posterior pairs of thoracic epimera com- 

 pletely without oblique ridge or furrow — only 

 with the usual furrow along the lower 

 margin 1. C. borealis, Lilljeb. 



* This character, which may be considered interesting, was pointed out by 

 me in 1890. G-. O. Sars gives in his ' Crustacea of Norway,' vol. ii. pi. 30. 

 fig. 2 inp., a drawing of the left maxilliped of Eurydice pulcJira, on the lobe 

 from the second joint of the maxillipeds two small hooks are shown ; but I have 

 re-examined the maxillipeds of this species, and can repeat my earlier state- 

 ment that such hooks do not exist. In the text (p. 73) Sars writes only: 

 " Oral parts on the whole resembling those in Cirolana!' In the description 

 of the genus Cirolana he says that the lobe mentioned has "2 curved hooks 

 inside," but in C. borealis I had found and figured three hooks, and also stated 

 (CirolanidiB &c. p. 278) that in this genus the number varied from one to 

 three. Moreover, Sars ought to have added that his figure represented the 

 maxilliped of an ovigerous female, the large plate from the second joint being 

 wanting in the male. Finally, it may be mentioned that lie has overlooked the 

 second of the two best characters for the genus Eurydice, viz., that the peduncle 

 of the antenute is four-jointed. If that highly talented and most meritorious 

 author would use the literature somewhat better than he frequently does, he 

 would avoid several errors, &c. 



t The "epimera" on the second to seventh thoracic segments here and in 

 the following descriptions counted as the first joint of the legs. 



