CONTRIBUTIONS TO THE NATURAL HISTORY OF THE COM- 

 MANDER ISLANDS. 



iV'o. 9.— Ox Tiir. Kxtomosthaca coi.lectkd I'.y Mk. Lkoxiiard STK.iNr.cKU. ox IJer- 



iXG Island, 1882-'8;{. 



Ky W. I.II.ffi.lIi:BORC:, 



Professor KmeriluK, Cpsala, Sweden. , 



1 Branchipus pakidosus (O. F. MUllkr)- 



Canerr panidoyns O. F. MuiJ.KR, Zoolojjia Danica, vol. II. p. 10, tab. 48, lijf. 1- 



8 (1788). 

 Branchlnecla tjrociilau^Hm Vkrrill, Proc. Amor. Assoc. Atlv. Science, 1869 

 ((mill. July, 1870), Kxtr., p. Hi. 

 Branch inect a arctica of Veirill, described from Labrador {op. cit, p. 

 If)), is probably likewise identical with Miiller's species. The Cancer 

 stagnalis, described by Fabricius in his Fauna GrcBiikindica (p. 2-45), 

 also beloni,^s Itere, and not to Cancer stagnalis of Liunieus. 



According to Mr. Stejneger's MS. notes this species was found rather 

 numerous in many of the small ponds in the neighborhood of the vil- 

 lage on Bering Island. It occurs besides in Greenland, in the Alpine 

 anil northern districts of Xorway, on the Kola Peninsula, and according 

 to specimens collected during the ditl'erent expeditions of I'rofessor 

 Nordenskiiild, also in Waigatsch and Novaja Semlia, and may be re- 

 garded as circumpolar in its distribution. Collector's numbers, 12G9 and 

 2418 ; U. S. Nat. Mus. Nos. 12435 and 12430. 



2. Daphiiia longispina O. F. Mvllkr. 



Daphnia loni/ispiiia O. F. MvLLKK, Entoiiiostr. Daiiica, p. 8S, tnl). xii, (ij;. 

 8-10 (178.')).— Fr. Leyoig, Naturj^eseh. tl. Daphiiid., p. 110, taC. ii,lig. l:?- 

 20 (18fi0). — G. O. Sars, Om do i Onies'ii'.n af Cln-istiania forekomiueiHlc 

 Cladocerer, Videusk. Selsk. Christiana Forliandl., 18f)l, p. 145.— P. E. 

 MiJLT.KR, Daniuark's Cladoce,ra, Natnrliist. Tidsskr., :> Ii:i'kk(>, V, Extr., p. 

 (iO, tab. i, tig. 1,2(1807). 

 The few specimens collected by Mr. Stejneger in small ])onds near 

 Ladiginsk, Tiering Island, prove to belong partly to a forma rernalis 

 characterized by the thick and short setiB on the second pair of anten- 

 na;, and partly to a varietas ahhrcviafa., peculiar by having the head un- 

 usually abbreviated, and by the short spine on the posteriiir end of the 

 shell. This species occurs in Denmark, Sweden, Norway, Finland, llus- 

 sia, England, Germany, TJelgium, and without doubt also in Siberia and 

 North America. 



Collector's No. 1270; U. S. Nat. Mus. No. 12431. 



3. Eurycerciis glacialis, sp. uov. 



Jjjncem hrmellalits^ II. Kl{<)YER, Gronland's Aniphipoilor, K. Dan.sko Vidonsl<^ 

 ScLsk. Natnrv.-:\lath. Afliandl., YII, p. :;20 (witliont dcsfrijilion). 

 Distinguished from Eurxjccrcus lamcllatiis (O. V. MiiLl.KU), the only 

 known species of this genus : (1) F.y its consideraldy larger size (length 

 1.'54 



