Kov. 1 . K. li. Stebbing on Arctic Crustacea. 1 1 



Rhoda inermis (Kioycr). 



1&46. ? ThymtiojHHla inermis, Ivrover, Oaiiuard'a \'oy. dii Xord, Cru'^t. 



pi. vii. tiirs. - a-t. 

 1882. Enphiuuia iiiermis, Sara, lA)rh. Selsk. Christian, no. 18, p. ol, 



pi. i. lij,'. 15. 

 188."). liureophaufia imrnii^, Sara, 'Challeuger* Reports, vol. xiii. 



ScLizopoda, p. (>4. 

 1880. liuivophansid i/iennii, Sard, Norwegian Xorth-Atlantic Exp., 



Crust, vol. ii. p. 1.'5. 

 1887. Roreophaiuia inermis, Hansen, Malac. Groenl. occid., Vid. Medd. 



p. 5:i. 



1892. lioreophauKiii incrmti, 'Sormmx, Ann. & Mag. Nat. Hist. ser. 6, 

 vol. i.\. p. 4t)l. 



1893. Rhoda inermis, Stebbiug, Hist. Crust, p. 2G.'{. 



Norman having identified the Boreophausi'a Rnschii 

 (M. Sars) with Rhoda Jardineana, Sim, 1872, it seems clear 

 that the generic name Boreophausia, proposed by Sars in 

 1883, must give way to the mncli earlier name Rhoda. 



Mr. Bruce's specimens of Rhoda inermis were taken on 

 two occasions iu July by the tow-net at night, 



Fam. Mysidae. 



Genus Mysideis, Sars, 1869. 



1869. Mysideis, Sara, Underscigelser over Cliristianiafjordens Dybvands- 



fauna, p. 28. 

 187U, 1879. Mysideis, Sars, Monogr. Norges Mysider, pt. 1, p. 9, pt. 3, 



pp. 1, 110. 



On page 9 of the ' ^lonograph ' Sars assigns Mysideis to 

 the group in which all the plcopods of the male are unlike 

 those of the female, and to the division of that group which 

 has the molar of the mandibles distinct, separating the genus 

 from its companions by the character that the incisive lobes 

 of the Jirst maxilljB are only two instead of three. The full 

 generic character in pt. 3, page 1, and the subsequent specilic 

 descriptions and figures, agree with the original account in 

 1869 in applying the character to the second raaxilke, to 

 which alone it could be appropriate. From the type species, 

 Mysideis insignis, the M. grandis of Goes is very clearly 

 distinguished by the subacute or tubercular jn-ojoction in the 

 middle of the outer margin of the first maxillae, as well as by 

 the truncate apex of the telson. 



A^ysideis grandis (Goes). 



1804. Mytis yrandif, Goes, Cru.nt. podophth. Sueciae etc., CEfv. Vet.- 

 Akad. Forh. p. 176 (extr. p. 10). 



