REPORT ON THE AMPHIPODA. 415 



and distal ends of the hand ; pleon very minute. Colour dark brownish-yellow. Length 

 •33 in., breadth (of body) -16 in. Two female specimens. 



" Hah. On the northern ' bowhead ' whale (probably Balima w.ysticetm, Linn.), near Behring 

 Strait. 



" This is the most compact of the three species, as well as the smallest. I find, in comparing 

 large series of C. Scammoni, that a considerable variation in form obtains, so far as regards 

 comparative length and breadth, even in adult specimens, and these differences are greater 

 than those observed, in the same characters, between the sexes." 



Liitken is of opinion that the Cyamns mysiieefi here mentioned is the same as his own Cyamus 

 mystketi, 1870. A. Brandt, 1872, as already noticed, does not admit the propriety of giving 

 up the old name, Cyamus ceti, for this species. Indeed, no names would be safe, if subse- 

 quent confusion of heterogeneous animals, under a name rightly established to begin with, 

 were allowed to make such a name void. For "no ventral lines," in the description of 

 Cyamus suffusus, Liitken thinks " no ventral spines " should be read. The species may, 

 he supposes, be the same as his own Cyamus paciflcus, which also lives on Megaptera 

 versabilis, C. 



1872-3. DaLL, W. H. 



On the Parasites of the Cetaceans of the N. W. Coast of America, with Descrip- 

 tions of New Forms. The Annals and Magazine of Natural History. Number 

 LXIII. Vol. XL— Fourth Series. London, 1873, p. 238. (From Proceedings of 

 the California Academy of Sciences, December 18, 1872.) 



He here adds, in regard to Cyamus suffusus, " the females, which were unknown at the date of 

 my description, now prove to resemble the male in every respect, except in regard to the 

 sexual organs, and in being a trifle more slender in form." All the specimens came from 

 the humpback {Megaptera versabilis. Cope). DaU favours " the hypothesis that each 

 species of whale has its own peculiar parasites, and that there is rarely more than 

 one species of Cyamus found upon one animal." 



1872. Fric (Fpjtsch), Anton. 



Die Krustenthiere Bohmens. Archiv fiir die naturwissenschaftliche Landes- 

 forschung von Bohmen. IL Prag, 1872. pp. 203-269. 



Among the Crustacea which have been observed in Bohemia, and are here described, Dr. von 

 Martens, Zool. Record for 1872, says that two Gammaridaj are included. 



1872. Hoy, p. Pi. 



Deep-water Fauna of Lake Michigan. Transactions of the Wisconsin Academy 

 of Sciences, Arts, and Letters, 1870-2. Madison, Wis., 1872. pp. 98-101. 

 (Also in the Annals ' and Magazine of Natural History. Vol. XL — Fourth Series. 

 London, 1873. p. 320.) 



He records from the stomachs of white-fish, and from dredgings at depths of 50 to 70 fathoms, 

 throe species of Amphipods determined by Dr. William Stimpson. Nothing, however, but 



