44 BRITISH COPEPODA. 



Lough Swilly, amongst muddy sand, from a depth of 

 eight fathoms. 



This species is interesting as being an example of 

 an entirely free-living LicJiomolgus, about whose usual 

 haunts there can be no doubt. I have not seen a 

 single specimen in any collection of ascidrcolous 

 species, and from its usual dark brown colour and its 

 frequent occurrence on the fronds of fuci I think that 

 its nourishment is, in all probability derived either from 

 the juices of algae, or from still more minute animals 

 living upon their fronds. 



The differences between this and the typical forms 

 of Lichomolgus do not seem important enough to 

 warrant the retention of the generic term Macro - 

 cJieiro7i, which I at one time applied to it. The 

 7-jointed anterior antenna is met with in some other 

 species {L. liher), while the long-clawed, 3-jointed, 

 posterior antenna may be accepted as of not more 

 than specific importance. 



2. Lichomolgus liber, Brady and Robertson. PI. 



LXXXVI, figs. 1—13. 



Lichomolgus liber, B. &. R. Brit. Assoc. Report, p. 197 (1875). 



In general appearance like the last species, but 

 somewhat more robust ; joints of the first pair of 

 antennae (fig. 2) stouter, the last joint much the 

 shortest, and only about one fourth as long as the 

 second; third and sixth joints about once and a half 



