PRT'STAr-'RA OF XnnTnnMBF.nT.ANT) AXn niTiTTAM 



esttilciitits, and tlic free-swimming condition in wliicli it is 

 frequently found is probably only temporary. The parasitic 

 Crustacea of our district have been scarcely at all investi- 

 gated, and will form a rich field for future research. The 

 identification of this species with Asconiyzon echinicola Xorman 

 appears to have been erroneous. There are rather conspicuous 

 diflferences in the fifth pair of feet and other points, hut these 

 need examination with the aid of furthrr specimens, not at 

 present attainable. H. 



AsrEROCHF.HKS RoKCKI ((1. S. 15rad\). 



1880. ArMiVi^its P,'eiki\ Brady (3), p. 60. pi. xci.. figs. 1-9. 



1S99. Aiterocliercs Boccki. (Hesbrecht, Die Asterocheriden 



des Golfes von Xeapel und der angrenzenden Meeres- 



Abschnitte, Berlin. 1899, pp. 75 and 100, pi. i., \\g. 2, 



pi. ii., figs. 22-31. 



In a tidal pool, Alnmouth, September, 1899 (G. .S. B.) 



Like the preceding, probably a truly commensal or pnrasitic 



species only accidentally found in a free condition. X. 



Asir.RocHKKKS vioi.ACEfs (Claus). 



1889. Rchiiiocheres violacciis, Claus, [ 'eber neue rider wenig 

 bekannte halbparasitische Copepoden, p. 30, pi. vi.. 



figs. I- ID. 



1899. Asterocheres violaceus, Ciesbrecht, loc. cil., pp. ;() 



and loi, pi. i., fig. i, and pi. ii., figs. 34-42. 

 1899. Echiiwcheres violaceus, Brady, On Jlyopsyllits 

 coriaceus and other Crustacea taken at .Alnmouth. 

 Xat. Hist. Trans. Xorthumberland and Durham, 

 vol. xiii., p. 437, pi. xii., figs. 9, 10. 

 1899. Cyclopicera Ih-niicicnsii, idem ibidem, p. 43S, pi. xiii., 

 figs. 1-8. 

 Two specimens taken in the free condition in a tidal pool 

 near low-water mark at Alnmouth (G. .S. 15.) 



The name Cyclopicera berniciensis must be withdrawn, 

 having been founded upon a mutilated male specimen of 

 Asterocheres violacens. 



149 K 



