REPORT ON THE AMPHIPODA. 837 



Genus Oediceros, Kr0yer, 1842. 



1842. Oediceros, Kr0yer, Naturli. Tidsskr. R. 1, Bd. iv. p. 155. 



1852. (Edicerus, Dana, U. S. Explor. Esped., vol. xiii. pt. ii. pp. 910, 933. 

 1855. ,, Stimpson, Proc. Acad. Nat. Sci. Philad., vol. vii. 



1859. Oediceros, Bruzelius, Skand. Amph. Gamtn., p. 92. 



1859. „ M. Sars, Oversigt over norsk-arkt. Krebsdyr. 



1860. „ Boeck, Forh. ved de Skand. Naturf. 8de M0de. 

 1862. QSdieeriis, Spenoe Bate, Brit. Mus. CataL Amph. Crust., p. 103. 

 1862. (Ediceros, Bate and Westwood, Brit. Sess. Crust., vol. i. p. IGO. 

 1865. ,, Goes, Crust, amph. maris Spetsb., p. 10. 



1865. Oedicerus, Lilljeborg, On the Lysianassa magellanica, p. 18. 



1869. CEdieeroe, Norman, Last Report Dredging Shetland Isles, p. 278. 



1870. „ Boeck, Crust, amph. bor. et arct., p. 81. 

 1876. „ Boeck, De Skand. og Arkt. Amph., p. 255. 

 1876. CEdicerus, Miers, Catal. Crust. New Zealand, p. 126. 



1879. „ Sars, Crust, et Pycn. nova, p. 449. 



1880. „ Haswell, Proc. Linn. Soc. N.S.W., vol iv. p. 324. 

 1882. „ Haswell, CataL Australian Crust., p. 238. 



1882. Oediceros, G. O. Sars, Oversigt af Norges Crust., p. 24. 



1883. Oedicerus, Schneider, Norges Oedicerider, p. 11. 



1884. Oediceros, Schneider, Crust, og Pycn. Kvaenangsfjorden, p. 78. 



1885. „ Sars, Den norske Nordhavs-Expedition, p. 170. 



1886. Oedicerus, Gerstaecker, Bronn's Klassen und Ordnungen, Bd. v. Abth. ii. p. 503. 



For the original definition of this genus, see Note on Kr0yer, 1842 (p. 199). J. S. 

 Schneider, in 1883, defines it as follows : — 



" Head produced into a frontal rostrum, which is sometimes geniculate, acuminate, 

 sometimes extended forwards and obtuse ; the eyes either flat or prominent, coalesced. 



" Antennse furnished with feathered cilia {plumulis instructse), the flagellum of the 

 lower antennse of the adult male not elongated. 



" Mandibles with the molar tubercle rather small, of irregular shape. 



" Gnathopods with the wrist short, the hand very large, subcheliform." 



(Ediceros lynceus, M. Sars (PI. CXXXVII. B). 



1859. Oediceros lynceus, M. Sars, Oversigt over norsk-arkt. Krebsdyr. 



1859. Oedicerus arcticus, Daaielssen, Beretning om en zool. Reise. 



1860. Oedicffi-os lynceus, Boeck, Forh. ved de Skand. Naturf. 8de M0de. 

 1862. (Edicerus lynceus, Spence Bate, Brit. Mus. Catal. Amph. Crust., p. 372. 

 1865. Oediceros propinquus, Goiis, Crust, amph. maris Spetsb., p. 10, fig. 19. 

 1870. Oediceros lynceus, Boeck, Crust, amph. bor. et arct., p. 82. 



1876. „ „ Boeck, De Skand. og Arkt. Amjih., p. 259, pi. xiii. fig 4. 



1883. Oedicerus lynceus, Schneider, Norges Oedicerider, p. 14, Tab. ii. fig. 12. 



1884. Oediceros lynceus, Schneider, Crust, og Pycn. Kvaenangsfjorden, p. 78. 



This species has not long since been carefully examined and described afresh by 

 J. S. Schneider. He thinks it highly probable that in this species two or possibly 



