REPORT ON THE AMPHIPODA. 1577 



1877. Oxyeephahis, Streets, Bulletin U.S. Nat. Mus., No. 7, p. 136. 



1878. ,, Claus, Ueber Herz und Gefass-system der Hyperiden, Zool. Anzeiger, Jahrg. i. 



p. 207. 



1878. „ Streets, Pruc. Acad. Nat. Sci. Pliilad., p. 278. 



1879. „ Claus, Die Gattungen und Arten der Platysceliden, pp. 43, 44. 



1884. „ Claus, Lekrbuch der Zoologie, trans, by Sedgwick, p. 455. 



1885. „ Cams, Prodromus Faunae Mediterranean, pars ii. p. 427. 

 1885. 1 Natalias, Carus, Prodromus Faunae Mediterranean, pars ii. p. 427. 

 1885. ? Carcinornis, Carus, Prodromus Faunae Mediterranean, pars ii. p. 427. 



1885. ? Omithorhamphus, Carus, Prodromus Faunae Mediterraneae, pars ii. p. 428. 



1886. Oxyeephahis, Gerstaecker, Bronn's Klassen und Ordnungen, Bd. v. Abth. ii. p. 487. 



1886. „ Thomson aud Chilton, Trans. New Zealand Inst., vol. xviii. p. 151. 



1887. „ Bovallius, Systematical List of Amph. Hyper., Bihang till K. Svensk. 



Vetensk.-Akad. Handl., Bd. 11, No. 16, p. 35. 

 1887. „ Claus, Die Platysceliden, p. 68. 



For the original definition of the genus Oxycephalic, see Note on Milne-Edwards, 

 1830 (p. 143). For the definitions of Orio, see Note on Cocco, 1832 (p. 145), 1833 

 (p. 150), and compare Note on Prestandrea, 1833 (p. 152). For the account of Ornitho- 

 ramp>hus, see Note on de Natale, 1850 (p. 239). For Erpetoramphus see Note on de 

 Natale, 1850 (Appendix, p. 1623). For the definitions of Natalius and Carcinornis, 

 see Note on Costa, 1864 (pp. 346, 347). For an independent definition of Oxy- 

 eephahis, see also Note on Nicolet, 1849 (p. 232). For a short definition by Claus, see 

 Note on Claus, 1879 (p. 493). Those who have access to the specimens on which the 

 Italian authors mentioned in this synonymy founded their genera may be able to 

 uphold some of those genera as distinct, or to show that they have anticipated some 

 of the genera more recently instituted. Claus' fuller definition of Oxyeephahis is to 

 the following effect : — 



" Body elongate, in the female sex having the perseon widened. Head outdrawn in 

 a tolerably triangular rostrum, the base of which receives the anterior antenna? in a deep 

 groove-like excavation of the ventral surface. From this a flat channel extends on the 

 under-side of the head to the mouth-organs for the reception of the long zigzag folded 

 second pair of antennae. The anterior antenna? end with a short two- to three-jointed 

 flagellum, and in the male are strongly swollen, weakly curved, and carry a thick brush 

 of close-set olfactory filaments. The hinder antenna? of the male are five-jointed, folded 

 zigzag and end with a short terminal joint, while in the female they are completely 

 wanting. Mandibles powerful, with sharp tooth-like projecting cutting edge, attached 

 to the rim of the tumidly prominent epistome. In the female without palp, in the male 

 they carry one that is elongated rod-like, reacting to the anterior antenna? ; its two distal 

 joints lie angularly curved and form a sort of hook-like termination. Maxilla? were not 

 found. The maxillipeds are represented by a three-leaved under-lip. The two short 

 pairs of gnathopods are complexly chelate ; uniformly is the chela of the first pair 

 shorter, more compact, and armed with sharper edge to the finger-joint. The first joints 



(zool chai.l. exp. — part lxvii. — 1888.) Xxx 198 



