432 Canon A. M. Norman on Bri/ish Isopoda. 



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

 beautifully illustrated in Professor Sars's great work on the 

 Crustacea of the Norwegian North-Atlantic Expedition, that 

 furtlier publication of our papers was discontinued. As ^ga 

 megalops^ sp. n., was one of the forms then under our notice, 

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

 the species. 



Fam. .aEgidae. 

 Genus 1. ^Ega, Leacli, 



1. jEga psora (Linn.). 



1836-49. ^ga emnrginata (Leach), 11. Milne-Edwards, Cuvier's Regne 



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

 1858. JEJ'/a 2)som, Liitkeu, /. c. p. 1. 

 1867. yEga psora. Bate & Westwood, I. c. vol. ii. p. 283. 

 1879. yEga psora, Schicidte & Meinert, I. c. p. 357, pi. viii. figs. 5, 6 



(the young). 

 1890. JEga psora, H. J. Hansen, /. c. p. 294, pi. ix. figs. 4, 4i. 

 1897. yEga pbora, G. 0. Sars, /. c. p. 69, pi. xxiv. 



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

 4° 30' W., 290 fathoms, and lat. 60'' Q', long. 5° 8' N., 3o2 

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

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

 all in Mus. Nor. 



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



figs. 8, 9.) 



1858. uSiga veyitrosa, M. Sars, " Oversigt norske-arctiske Region fore- 

 komiuende Krybsdyi'," Videns. Selskab. Forhandl. p. 35 (separate 

 copy). 



1879.'^y£]r/« ventrosa, Schicidte k Meinert, I. c. p. 375, pi. ix. figs. 7-10, 



1885. jEgiochus Nordenskioldi, Bovallius, " New Isopod from Swedish 

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

 (separate copy). 



1886. ^ga Latkeni, Bovallius, " New or imperfectly known Isopoda," 

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



copy)- 



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



1897. ^ga ventrosa, G. O. Sars, I. 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 west of Shetland, in depths of 203-312 fathoms. I have 

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

 Hardanger Fiords. 



