492 



Messrs. T. and A. Scott on 



After a careful study of the structure of all these three 

 forms, it seems to us that, though the affinity between 

 Canuella and Sunaristes is very close, yet the differences that 

 separate them are too important to be regarded as of merely 

 specific value, and that we are therefore justified in still 

 retaining Canuella as a distinct genus. 



The following is a tabular arrangement of the more 

 important differences that distinguish the three genera : — 



Note on Remigulus tridens, T. and A. Scott. 



In October 1893 we published * a description, with figures, 

 oi a somewhat curious Copepod from Loch Linnhe, Argyl- 

 shire. it was described under the name of Remiyulus tridens^ 

 gen. et sp. n., as no previous record of its occurrence was at 

 the time known to us ; and from certain peculiarities of 

 structure observed we stated in our remarks of the Copepod 

 that, " though obtained amongst dredged material, its struc- 

 ture clearly indicates semiparasitic habits similar to the 

 Lichomolgida3 and other allied forms." A considerable time 

 after our description was published we ascertained that 

 MM. Canu and Ouenot, in a memoir entitled " Commensaux 



" * Ann. & Mag. Nat. Hist. ser. 6, vol. xii. p. 242, pi. xi. figs. 15-20, 

 pi. xii. figs. 1-3 (Oct. 1893 j. 



