406 ' THE VOYAGE OF H.M.S. CHALLENGER. 



elongata; brings Oxycephalus oceanicus, Guerin, as a male not fully developed, mider 

 Oxyceplialus jdscator, Edw. ; assigns Elwbbdosonia whitei, Sp. Bate, as the male form, to 

 Rhahdosoma armatum, Edw.; describes Oxyceijlidliis tenuirostris, u. sp.; Simorlujnchus, 

 n. g. ; Simorhynclms antennarius, n. sp. ; Schnehagenia, n. g., afterwards recognised as 

 = Tliamyris, Sp. Bate ; Schnehagenia rapax, n, sp. ; and in conclusion remarks that the 

 genus Synojna, Dana, belongs not to the Oxycephalida, but to the Gammaridae. 

 For the descri^jtions of the genera, etc., see Notes on Glaus, 1879. 



1871. Cope, Edward Drinker, born July 28, 1840 (S. I. Smith). 



Life in the Wyandotte Cave. The Aunals and Magazine of Natural History. 

 No. 47, for November 1871. Vol. VIII. Fourth Series. Loudon, 1871. pp. 

 368-370. 



This account, borrowed from " Indianapolis Journal, Sept. 5, 1871," refers to a Gammaroid 

 Crustacean, not found in the Wyandotte Cave, but in the waters of the Mammoth Cave. 

 Cope afterwards called it Stygobromus vitreus. See Note on Cope, 1872. 



1871. Darwin, Chajiles, born February 11, 1809, died April 19, 1882. 



The Descent of Man, and Selection in relation to sex. Second edition. 1885. 

 (First Edition, 1871.) 



Remarks bearing on the Amphipodaare made in " Chapter VIII. Principles of Sexual Selection," 

 and " Chapter IX. Secondary Sexual Characters in the Lower Classes of the Animal 

 Kingdom." See pages 209, 233, 237, and especially 265-271, in which Fritz Midler's 

 " Facts and Arguments for Darwin " are utilized, together with information received from 

 Mr. Spence Bate. 



On page 485, note 39, these observations are made, "Fritz MiiUer has shewn ('Facts and 

 Arguments for Darwin,' Eng. Trans. 1869, p. 79) that the males of several Amphipod 

 Crustaceans become sexually mature whilst young ; and I infer that this is a case of 

 premature breeding, because they have not as yet acquired their fully developed claspers. 

 All such facts are highly interesting, as bearing on one means by which species may 

 undergo great modiKcations of character." 



On page 568 Darwin says, " an ear to be capable of discriminating noises — and the hi"h 

 importance of this power to all animals is admitted by every one — must be sensitive to 

 musical notes. We have evidence of this capacity even low down in the animal scale ; thus 

 Crustaceans are provided with auditory hairs of dififerent lengths, which have been seen to 

 vibrate when the proper musical notes are struck. (Helmholtz, Theorie Phys. de la 

 Musique, 1868, p. 187)." 



1871. DoHRN, Anton. 



Geschichte des Krebstammes, nach embryologischen, anatomischcn und palseon- 

 tologischen Quellen. Jenaische Zeitsehrift fiir Medicin und Naturwissenschaften 

 Bd. VI. pp. 95-156. 



An account of this paper is given in the Zoological Record for 1870, by Dr. von Martens. 



