432 Canon A. M. Novman on British Isopoda. 



liad at our disposal were just at that time fully described and 

 beautil'ully illustrated in Professor Sars's great work on the 

 Crustacea of the Norwegian North-Atlantic Expedition, that 

 further publication of our jiapers was discontinued. As JEja 

 wegalops^ pp. n., was one of the forms then under our noiice, 

 Mr. Stebbing's name is associated with my own as author of 

 the species. 



Fam. ^gidae. 

 Genus 1. JEiQX, Leach. 



1. ^ga psora (Linn.). 



1836-49. ^ffa emarginnta (Leach), H. Milne-Edwards, Cuvier's Regne 



Animal, Crustacils, pi. Ixvii. figs. 1-1 h. 

 18o8. ^'/a psora, Liitken, /. c. p. 1. 

 1867. yEffu psora, Bate & Westwood, I. c. vol. ii. )). 283. 

 1879. ^(/a psora, Schiodte & Meiuert, /. c. p. 357, pi. viii. figs. 5, 6 



(the young). 

 1890. ^;/a psora, H. J. Hansen, I. c. p. 294, pi. ix. figs. 4, 4 i. 

 1897. ^(/a psora, G. 0. Sars, /. c. p. 59, pi. xxiv. 



North of Scotland [A. Hancock) ; lat. 60° 14' N., lona. 

 -4° 30' W., 290 fathoms, and lat. 60^ 6', long. 5° 8' N., 3')2 

 fathoms ('Porcupine,' 1869, Stats. 78 and 82, both witliin 

 the British Area) ; Ivors Fiord, near Bergen, 1878 {A. M. N.) : 

 all in Mus. Nor. 



2. yErja ventrosa, M. Sars. (PI. XII. figs. 5-8 ; PI. XIII. 



figs. 8, 9.) 



1858. ^ga ventrosa, M. Sars, " Oversigt norske-arctiske Region fore- 

 komnjende Kryhsdyr," Videns. Selskab. Forbandl. p. 35 (separate 

 copy). 



1879. ^ga ventrosa, Schiodte k Meinert, /. c. p. 375, pi. ix. figs. 7-10. 



1885. jJigiochus NordenskiohU , Rovallius, " New Isopod from Swedish 

 Arctic Exped.," Sveuska Vet.-Akad. Handl. vol. x. p. 5, pis. i. & ii. 

 (separate copy). 



1886. ^ga Liiike/ii, Bovallius, " New or imperfectly known Isopoda," 

 Svenska Vet.-Akad. Handl. vol. xi. p. 3, pi. i. figs. 1-10 (separate 

 copy). 



1886. ALgiochus ventrosus, id. ibid. p. 8. 



1897. Aiiga ventrosa, G. O. Sars, /. c. p. 64, pi. xxvi. fig. 9. 



This species was added to the British fauna in 1869 by 

 the 'Porcupine/ Stats. 74, 75, 78, stations which are all to 

 the we.st of Shetland, in depths of 203-312 fathoms. I have 

 taken it in Norway in 250-300 fathoms in the Trondhjem and 

 Hardanger Fiords. 



