REPORT ON THE AMPHIPODA. 899 



Lafystius sturionis, Krdyer (PI. CXXXVII. D). 



1842. Lafystius sturionis, Kr0yer, Naturh. Tidsskr., R. 1, Bd. iv. p. 157. 



1855. Laphystius sturionis, Liljeborg, loc. cit. 



1857. Darwiuia compressa, Sp. Bate, lor. cit. 

 1857. „ „ White, loc. cit. 



1859. Laphystius Sturionis, Bruzelius, lor. cit. 



1861. Lafystius Sturionis, Spence Bate, Brit. Mus. Catal. Amph. Crust., p. 110. 



1862. Darwiuia compressa, Sp. Bate, Brit. Mus. Catal. Amph. Crust., p. 108, pi. xvii. fig. 7. 

 1862. „ ,, Bate and Westwood, Brit. Sess. Crust, p. 184. 



1870. Laphystius Sturionis, Boeck, Crust, amph. bor. et. arct., p. 103. 



1873. Ichthyomyzocus morrhuxl, Hesse, loc. cit., p. 7. 



1874. Laphystius Sturionis, S. I. Smith, Invert. Animals Vineyard Sound, pp. 457, 557. 

 1S75. „ ,, SchifHlte, Krebsdyrenes Sugemund, p. 237, Tab. v. figs. 9-18. 

 1876. „ ,, Boeck, De Skand. og Arkt. Amph., p. 252, pi. xix. fig. 6. 



1878. Darwiuia compressa, Spence Bate, Crust, in Couch's Cornish Fauna revised and added to, 



p. 49. 



Locality. — The specimens were labelled as having been taken " Parasitic on Cottus, 

 Halifax, May '73." This refers therefore to a point in the voyage between Stations 48 

 and 49. 



Remark — The mouth organs of this species are beautifully drawn by Schiodte ; they 

 are figured in this Eeport, as well for identification of the species, as to give facility of 

 comparison with the corresponding parts in kindred genera. 



Among numerous drawings of Amphipoda by Sir Joseph Hooker, prepared during the 

 Antarctic expedition of 1840-41, there is one of a species in many respects resembling 

 Acanthonotozoma cristatum, Owen, and like it reddish-white in colour, with red eyes. 

 If this fine species should prove to belong to the genus named it will be an addition to 

 the family Iphimedidse. 



Family Atylid.b, G. O. Sars, 1882. 



In 1865 Lilljeborg made the Atylime the eighth subfamily of the Gammaridae, with 

 the definition " Antennae superiores flagello appendicular! carentes. Oculi compositi. 

 Pedes trunci (thoracici) 7:mi paris antecedentibus minime vel parum longiores, segmento 

 ultimo unguiformi. Lamina? pedum maxillarium bene evolutae." To it he assigned the 

 genera Odius, Iphimedia, Laphystius, Calliopius, Paramphithoe, Atylus, Dexamine, 

 Acanthonotus, the first three and the last one being the same genera as Boeck afterwards 

 grouped together in his subfamily Iphimedinse. In 1870 Boeck constituted the 

 Dexaminina? the thirteenth subfamily of the Gammaridas, to receive the genera 

 Dexamine and Lampra, and at the same time made the Atylinse the fourteenth 

 subfamily, to receive the genera Atylus, Pontogeneia, Halirages, Calliopius, Amphi- 



