Mr. E. J.Miers on Arctic Crustacea. 97 



Anonyx ampulla, Kroyer, Nat. Tidsskr. 2 R. i. p. 578 (1844) ; Voy. en 



Scand. Atlas, pi. xiii. fig. 2 ; Brandt, in MiddeudorfF's bibirische Reise, 



ii. p. 131 (1851). 

 Anonyx lagena. Spence Bate, Cat. Amphip. Crust. Brit. Mas. p. 77, 



pi. xii. fig. 7 2 (1862) ; Boeck, Skaudin. og Arktiske Amphip. i. p. 



152 (1872) ; Buchholz, Crust, in Koldewey, Zweite deutsche Nord- 



polarf. p. 300 (1874). 



Coll. Feilden : Floeberg Beach, at 10 fathoms, male and females ; 

 fire-hole at lat. 82° 24' ; and at lat. 83° 19' at 72 fathoms. 



Coll. Hart : Winter quarters of H.M.S. ' Discovery,' at 11 fa- 

 thoms, two males and four females. 



My observations scarcely agree with those of Hr.Buchholz and other 

 authors as regards the rare occurrence of the males of this very com- 

 mon and well-known Amphipod. Of about thirty-six adult specimens 

 collected twelve are undoubtedly males, whereas Hr. Buchholz, after 

 a careful search, found only two examples of this sex in the series 

 obtained by the German expedition. The adult males of this 

 species may generally be distinguished from the females by the far 

 longer flagella of the inferior antennae, which, when drawn back, 

 reach to the posterior margin of the seventh segment of the body ; 

 in the adult females they do not greatly exceed in length the flagella 

 of the superior antennae, but there are male examples in which this 

 character is less strongly marked. I have not observed any marked 

 differences in the two sexes in the form of the segments of the body 

 and appendages. The length of the largest male, from lat. 83° 19' N. 

 is l-g- inch (38 miUims.) ; of the largest female, from Floeberg Beach, 

 nearly 1 inch 9 lines (44 millims.). 



This species is one of the commonest and most abundantly distri- 

 buted of the Amphipoda inhabiting the high northern latitudes ; it 

 is said by Ross, in Parry's 3rd Voyage (Z. c), to be " by far the 

 most numerous of the Crustacea inhabiting the Arctic Seas ;" and it 

 is, as has been already stated, of especial interest as being the only 

 species obtained at lat. 83° 19' N., the most northerly point attained 

 by the Expedition at which animals were collected. 



Its range extends along the shores of Ai'ctic America ; and it 

 occurs in the White Sea and on the coasts of Greenland, Iceland, 

 Spitzbergen, Norway, and Britain, and in the sea of Okhotsk. 



Anonyx gulosus? PI. III. fig. 2. 



Anonyx ffulosus, Kroyer, Nat. Tidsskr. 2 R. i. p. 611 (1844-45); in 

 Gaimard, Voy. en Scand. Atlas, Crust, pi. xiv. fig. 2 ; Spence Bate, 

 Cat. Amphip. Crust. Brit. Mus. p. 370 (1862) ; Boeck, Skand. og. 

 Arktiske Amphip. p. 157, pi. v. fig. 4 (1872). 



Anonyx norvegicus, Lilljeborg, CEfv. Kongl. Vet. Akad. Forhandl. 1851, 

 p. 22. 



? Anonyx Holbiilli, Spence Bate, Cat. Amphip. Crust. Brit. Mus. p. 75, 

 pi. xii. fig. 4 (1862). 



Three specimens were collected by Mr. Hart, from the largest of 

 which the following description is taken : — 



Ann. & Mag. N. Hist. Ser. 4. Vol. xx. 7 



