THE ANNALS 
AND 
MAGAZINE OF NATURAL HISTORY, 
[SIXTH SERIES. ] 
No. 93. SEPTEMBER 1895. 
XXX.—Notes on Amphipoda, old and new. 
By the Rev. Tuomas R. R. Stepsrna, M.A. 
[Plates VIII.-X. } 
THE family Photide was divided in Boeck’s system into three 
subfamilies—Photine, Leptocheirine, and Microdeutopine. 
Though the name Microdeutopus alludes to the peculiarity of 
the animal’s second gnathopods being smaller than the first, 
the Microdeutopine included species in which the first gnatho- 
pods are smaller than the second. For this and other reasons 
explained in the ‘ Challenger’ Amphipoda, p. 1062, and Sars’s 
*Crustacea of Norway,’ p. 538, it has seemed desirable to 
relinquish Boeck’s subdivision of the family. Della Valle, in 
his ‘Gammarini,’ p. 351, carries the process of amalgamation 
further, and unites the Photids and the Podocerid in one 
rather unwieldy family with the Corophiide. It is quite true 
that the three families are intimately related, but it is certainly 
a matter of convenience to keep them separate, and for this 
purpose the dorso-ventrally depressed body in the Corophiide 
and the hooked uropods in the Podoceride are useful cha- 
racters, neither of them being present in the Photide. To 
borrow the words which Professor 'T’. Thorell uses on a similar 
occasion—“ 'l'he groups are on the whole and in their typical 
forms sufficiently different to deserve their separate denomina- 
tions and the rank in the system which it has hitherto been 
customary to give them.” 
Ann. & Mag. N. Hist. Ser. 6. Vol. xvi. 15 
