HISTORICAL NOTES. 5 



J. D. DANA, 1617, in 1852 placed the Oxycephalids as a sub- 

 family Oxycephalince in the family Typhidce. 



In 1858 C. SPENCE BATE, 18, described the new genus Macro- 

 cephalus, with M. longirostris, n. sp., later, 20, he himself dropped both names, 

 finding them synonymous with Ehabdosoma, ADAMS and WHITE, and Eh. 

 armatum, H. MILNE EDWARDS; here below it is quoted as synonym for 

 Xiphocephalus armatus, H. MILNE EDWARDS. 



In 1861 the same author, 19, gave some interesting notes on the 

 young of some Hyperids allied to Oxycephalus; the following year he, 20, 

 established, in his catalogue of the Amphipoda in the- British Museum, 

 the family Oxycephalidae, with two subfamilies, Synopince and Oxyce- 

 phalmw, he described there Oxycephalus piscator, H. MILNE EDWARDS, 

 0. oceanicus, F. E. GUERIN, and 0. tuberculatus, n. sp. this latter was 

 described from a mutilated specimen but with characteristics sufficient 

 to show that it is a species of its own, not synonymous with any one of 

 the previously known species; further Ehabdosoma armatum, H. MILNE 

 EDWARDS, and Eh. Whitei, n. sp. of the former species he gave a new, 

 enlarged description, adding some good characteristics to those mentio- 

 ned by H. MILNE EDWARDS; of the latter species he gave a detailed de- 

 scription showing beyond doubt that it was a separate species. Unfor- 

 tunately he did not know both sexes of the two species, but only the 

 female of the former and the male of the latter. C. GLAUS was proba- 

 bly misled by this fact to interprete Eh. Whitei, SPENCE BATE, as the 

 male form of Eh. armatum, H. MILNE EDWARDS. SPENCE BATE gave also 

 drawings of all these species. 



16. J. D. DANA. On the Classification of the Crustacea Choristopoda or Tetra- 



decapoda. The American Journal of Science and Arts. 2 d Se- 

 ries. Vol. 14, p. 316. New Haven, 1852. 



17. United States Exploring Expedition during the years 1838, 1839, 

 1840, 1841, 1842, under the command of CHARLES WILKES. U. S. 

 N.; Crustacea. Vol. 2, p. 1009 and 1443. Philadelphia, 1852. 



18. C. SPENCE BATE. On some new Genera and Species of Crustacea amphi- 



poda. Ann. and Mag. of Nat. Hist. 3 d Ser. Vol. 1, p. 361. 

 London, 1858. 



19. On the Morphology of some Amphipoda of the Division 



Hyperina. Ann. and Mag. of Nat. Hist. 3 d Ser. Vol. 8, p. 

 1 15. London, 1861. 



20. Catalogue of the specimens of Amphipodous Crustacea in th e 

 collection of the British Museum, p. 341 346. London, 1862. 



