Canon A. M. Norman on British Isopoda. 432 



had 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 

 further 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. JEgidae. 

 Genus 1. JSiQiKj Leach. 



1. jEga psora (Linn.). 



1836-49. ^ga emarginata (I^eacli), H. Milne-Edwards, Cuvier'a Regne 



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

 1858. ^ga psora, Liitken, /. c. p. 1. 

 1867. ^ga psora, Bate & Westwood, I. c. vol. ii. p. 28-3. 

 1879. ^ga psora, Schiodte & Meiuert, I. c. p. 357, pi. viii. figs. 5, 6 



(the young). 

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

 1897. jEga psora, G. O. Sars, /. c. p. 59, pi. xxiv. 



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

 4° 30' W., 290 fathoms, and lat. 60° 6^ long. 5° 8' N., 362 

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

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

 all in Mus. Nor. 



2. ^ga ventrosa, M. Sars. (PL XIL figs. 5-8 ; PI. XIIL 



tigs. 8, 9.) 



1858. j^ga vetitrosa, M. Sars, " Oversigt norske-arctiske Kegion fore- 

 kommende Krybsdyr," Videns. Selskab. Forhandl. p. 35 (separate 

 copy). 



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



1885. ^giochus Nordenskioldi, Bovallius, " New Isopod from Swedish 

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

 (separate copy). 



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

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

 copy). 



1886. ^giochus 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. 



