204 Canon A. M. Norman on British Ainphipoda. 



associated in thousands of each species enjoying their dinner 

 in mutual respect. At Shetland I obtained Tryphosa nanoides 

 in great abundance on a dead fish. 



As Orchemenella cih'ata, G. O. Sars, has been shown by 

 J. Bonnier to be a synonym of Tryphosa nana (Kroyer), 

 Boeck, and Sars has acquiesced in this view, and as Tryphosa 

 nana was made hy Boeck the type of his genus Tryphosa^ it is 

 necessary that both generic and specific names employed by 

 Sars should give way to those which are earlier. 



34*. ? Tryphosa minuta (Kroyer). 



P 1861. Anonyx minufus, Bate & Westwood, (1) vol. i. p. 108. 



1876. Orchomene iinmifa, Boeck, (138) p. 174, pi. v. fig. 3. 



1890. Orchemenella minuta, G. O. Sars, (142) p. 67, pi. xxiv. fig. 1. 



This is a species found throughout the Arctic Ocean, 

 Siberian Sea, and Greenland, and though found throughout 

 Norway, it becomes scarcer southwards. 



Ilab. Is Anonyx minutus, Bate & Westwood, this species? 

 I do not think it can be, and am inclined to believe that 

 the Amphipod figured and described by them was a young 

 male of Orchomene humiUs, Costa, which species is found abun- 

 dantly at Polperro and Plymouth, whence Bate had specimens 

 of ^^ Anonyx minutus." Both figures and description accord 

 with 0. hzimih's, except the description of the posterior peraeo- 

 poda, which description, however, does not accurately apply 

 to any allied form known to rae. The only other record of 

 the occurrence of the species in our fauna is given thus by 

 Mr. T. Scott : — " This species is reported from Minard (Loch 

 Fyne), where it was collected in 1870 by Murray." It must 

 be observed that Sir J. Murray does not study the Amphi- 

 pods, and we do not know the authority who identified the 

 species. 



35. Tryphosa pinguis (Boeck). 



1860. Anonyx pinguis, Boeck, Forh. ved de Skand. Naturf. 8de Mode, 



p. 642. 

 1876. Orchomene pinguis, Boeck, (138) p. 176, pi. v. fig. 1. 

 1890. Orchemenella pinguis, G. O. Sars, (142) p. 67, pi. xxiv. fig. 2. 

 1893. Tryphosa pinguis, J. Bonnier, " Les Aniphipodes du Boulonuais, 



III.," Bull. Sci. France et Belgique, vol. xxiv. pp. 172, 196. 



The above names will show the confusion which has existed 

 among the small Lysianassids, as it seems to me from multi- 

 plying genera on insufficient characters ; but not wishing to 

 increase confusion, I have adopted for them M. Bonnier's 

 revision. 



Hab. " Dredged west of the Tan Buoy^ Cumbrae, in 



