558 Mr. A. 0. Walker on 



LXIT. — Species of Amphipoda taken hy '^ Riina,'' July and 

 August ll>lo, not in Norman's Final Shetland Dredying 

 Report^ 1«68. By ALFRED O. Walker. 



Lysianassa ceratina, A. O. Walker, 1889. 



Canon Norman refers " L. casta; ? and L. longicornis ($ 

 of Dredo^ino; Report of 186)i and 1:^64" to this species 

 (Crust. Northumberland and Durham, in Trans. Nat. Hist.- 

 Soc. North., Durham, &c., vol. iii. part 2). 



Aristias neglectus, Hansen. 



This is Anonyx tumida, Goes, of the Final Report. The 

 Shetland specimens presented to the British Museum by 

 Dr. Norman bear Hansen's designation. Aristias tumidus is 

 an Arctic species. 



Tryphosa horingii, Boeck. 



Socarnes erythrophthahmis^ Robertson, 1892. 



llippomedon denticulatus (Bate). 



Tryphosa sarsii (Bonnier), 1891. 



Ampelisca spinijMs, Boeck. 



Metaphoxus fultoni (T. Scott), 1890. 



Neo^ltustes assirnilis (C O. Sars, 1882). 



JSototropis vedlomensis (Bate and Westwood). 



Mcera tenuimana (Bate). 



Gamrnarus duebenii, Lillj. 



Jassa pus ilia (G. O. Sars, 1894). 



Notes on Crustacea of'Runa^ Cruise, July and August 1913. 

 Janira maculosa, Leach. 



Two specimens were found in the branchial sac of as 

 many individuals of the Ascidian Corella parallelogramnia. 

 This is probably the first time this Isopod has been found 

 as a commensal. It is, however, recorded as occurring- on 

 Alcyohiutn digi'afuni by Dr. P. P. Hoek (Crust. Neerland. 

 jjart ii. \). 5) and by the writer (Proc. Biol. Soc. Liverpool, 



