THE AMPHIPODA. 33 



Fam. Hyperiid^. 



1852. Hyperida (part.), Dana, Amer. Journ. Sei. & Arts, ser. 2, vol. xiv. p. 314. 

 1886. Hyperiidce, Sars, Norwegian North-Atlantic Exp. vol. xv. Crustacea, pt. ii. p. 36. 



1888. Hyperidce, Stebbing, ' Challenger' Amphipoda, Reports, vol. xxix. p. 1372. 



1889. Hyperiidce, Bovallius, K. Svensk. Vet.-Akad. Haudlingar, Bd. xxii. No. 7, p. 74. 



1890. Hyperiidce, Sars, Crustacea of Norway, vol. i. p. 5. 



1900. Hyperidce, Chevreux, Amphipodes de I'Hirondelle, p. 138. 



1901. Hyperiidce, Vosseler, Amphipoden der Plankton-Exp. p. 51. 



In the later works above cited there will be found a large fund of information 

 respecting this family, to which Dr. Bovallius especially has paid minute attention. 

 The species represented in the present collection are not numerous enough to justify 

 a discussion of the whole group. 



Hyperia, Latreille, 1823. 



1823. Hyperia, Latreille (in Desmarest), Diet. Sei. Nat. vol. xxviii. (Malacostraces). 

 1901. Hyperia, Vosseler, Amphipoden der Plankton-Exp. p. 56. 



Between the first and l^itest writers on this genus there is an immense array, and, as 

 Bovallius explains, the type species was known some sixty years before the genvis 

 received its present name. 



17. Hyperia luzoni, Stebbing. 



1888. Hyperia luzoni, Stebbing, ' Challenger' Amphipoda, Reports, vol. xxix. p. 1382, pi. 166 a, and 



"young (?)," p. 1384. 



1889. Hyperia luzoni, Bovallius, K. Svensk. Vet.-Akad. Handlingar, Bd. xxii. No. 7, p. 212. 

 1901. Hyperia luzoni, Vosseler, Amphipoden der Plankton-Exp. p. 64, pi. 5. figs. 16-28. 

 1901. Hyperia luzonii, Lo Bianco, Mittheil. Stat. Neapel, vol. xv. pp. 424, 416. 



The original descriptions referred to a single male specimen, 3"75 mm. long, from the 

 China Sea, off Luzon, lat. 16° 35' N., and a specimen less than 3 mm. long, which, as 

 Vosseler points out, is doubtless a young male, from the South Pacific, lat. 38° 6' S. 

 Vosseler had at his command 22 specimens, including young males and females and 

 many adult females, showing an extensive range in the Atlantic. 



The species is represented in the present collection by a female 25 mm. long, which 

 must be regarded as mature, seeing that it contained some four-and-twenty large eggs. 

 In several respects this species resembles that described by Bovallius and by Vosseler as 

 Hyperia Fabrei (Milne-Edwards), from which, however, it is distinguished not only by 

 various minute details of armature, but by two tolerably conspicuous features, in that 

 the second joint of the third, fourtli, and fifth peneopods is here far less dilated, while 

 the proportion which the telson bears to the peduncle of tlie last uropods is far greater. 

 The latter distinction is modified, but not cancelled, by Vosseler's observation that in 

 H. Fabrei the telson of the female is considerably larger than that of the male. In this 

 latter species, Vosseler gives the extreme length of the animal as 4 mm. ; Bovallius gives 



