REPOET ON THE AMPHIPODA. 465 



1877. Meinert, Frederik Vilhelm August, born March 3, 1833 (J. J. S. Steeustrup). 



Crustacea Isopoda, Amphipoda et Decapoda Danise : Fortegnelse over Dan- 

 marks Isopode, Amphipode og Decapode Krebsdyr. Naturliistorisk Tidsskrift. 

 III. Raekkes, 11. Bind. 1877-1878. pp. 57-248. 



A list of Crustacean literature is given, pages 58 to 68. The discussion of the Amphipoda begins 

 at page 91. Meinert prefers to reinstate INIontagu's specific name for Hyperia galba, on the 

 ground that 0. F. jMiiller's account of Cancer medusarum is too indefinite, and not like 

 Montagu's, supported by figures. But Montagu's figure is of so little service for specific 

 distinction as to constitute but a weak reason for displacing the older and well-established 

 name medusarum. ^Meinert includes in the synonjnny Hijperia obliria, Kroyer, and 

 Lestrigonus kinahani, Sp. Bate, in regard to which compare Note on Thomas Edward, 

 1868. Meinert also prefers the name Orchestia littorea, Montagu, to Orchestia gammarellus, 

 Pallas, on the ground that the figures and descriptions in Pallas are " insufficient to dis- 

 tinguish his Oniscus Gammarellus from his 0. Locusta." But the Notes on Pallas, 1766, 

 1772, will, I think, show that this opinion is erroneous. 



Pontoporeia fiircigera, Bruzelius, is kept distinct from Pontoporeia femorata, Kr0yer, on the 

 ground that Kriiyer could not possibly have overlooked the striking furcate process on the 

 back of the fourth pleon-segment. But it seems that Kr0yer did not do so, although in his 

 specimen it may have been weakly developed. It is figured in the " Voy. Scand. Crust., 

 t. xxiii., f. 2, a-y ;" to which Meinert himself refers under Pontoporeia femoraia, Kr. 



To Bafhyporeia pilosa, Lindstr0m, are assigned as synonyms " \ Bathyporeia Eobertsonii Sp. 

 Bate," and " Bathyporeia pelagica Sp. Bate," both as male forms. Batlujporeia tenuipes, 

 n. s., is thus defined: — -"Antenna; superiores subnudoe, flagello appendiculari biarticulato. 

 Antennse inferiores articulo tertio et quarto longis atque tenuibus. Angulus capitis acutus, 

 productus. Pedes omnes tenues, modice hirsuti ; pedes saltatorii ultimi paris setis 

 simplicibus instructi." 



Under " Pho.rus HoIMlH KrOyer," is given " Forma altera maris : Antennfe superiores paulo 

 longiores. Antennse inferiores tenuissimffl, fere corporis longitudinis. Pedes saltatorii paris 

 ulcimi niulto longiores, setis longis phimosis obsiti." 



Urotho'e marina, Sp. Bate ( (J ), and Uroihoe hrevicornis, Sp. Bate ( $ ), are accepted, in accord 

 with Bate and Westwood's suggestion, as the two sexes of one species. 



Paramphitho'e glabra, Boeck, and Parampliitho'e bicuspis, Ej0yer, are the names given to two 

 species which Boeck in his latest work assigned to Pleiisfes. 



Of CaUiopius norvegicus, Rathke, Meinert remarks that it is by no means easy to distinguish it 

 from Calliopiris lasviuseuliis, in which I quite agree with him. He thinks it may be no more 

 than a variety of Ixviusculus. Of Gammarus locusta, Linn., he says that the young difi'er 

 from the adults in having the eyes small, round or oval, and the rami of the last uropods 

 often of different lengths. He agrees therefore with the general view in making Gammarus 

 poecilurus, Rathke, a synonym of locusta ; but he also thinks that Gammarus marinus is 

 only a shallow water variety. 



In the synonymy of Gammarus pulex, Pennant, he places Gammarus pulex, of Hosius and others, 

 "Gammarus Koeselii Gervais," Gammarus fluviatiUs, Milne-Edwards, ? Gammarus lacustris, 

 G. 0. Sars, ? Gammarus neglectus, G. O. Sars. Between Gammariis pulex and Gammarus 

 neglectus he has met with the intermediate gradations. If Sars' species is maintained, he 

 thinks that the earlier name for it should not have been altered, in which also I agree with 

 him. 



Pallasea, Sp. Bate, he spells Pallasia, but this improvement must be avoided, as with it the 

 name is preoccupied. 



(ZOOL. CHALL. EXP. PART LXVH. 1887.) XxX 59 



