28 ABBRRANTIA. 
Group—A BERRANTIA. 
Tuts group is distinguished from the more typical 
Amphipoda by the abnormal condition or the absence of 
one or more segments of the pleon, as well as by the 
coxe not being largely developed into scales, and being 
mostly fused with their respective segments of the 
pereion. 
This group comprises the genus Dulichia together with 
the Lzmopir DA, an order founded by Latreille to sepa- 
rate the genus Caprella from the lsopopa, amongst which 
naturalists had previously arranged it. 
It corresponds with the order La:mopreopa of Milne 
Edwards, including the family Dulichiide of Dana. 
Fam. I.—DULICHIID. 
PEREION six-jointed ; the last two segments fused into 
one. The last segment of the pleon absent. Telson squa- 
miform. Fifth pair of pereiopoda attached to the pos- 
tero-inferior angle of the sixth segment. Posterior pair 
of pleopoda wanting. 
In the typical forms of Aberrant Amphipoda, all the 
legs have the coxe fused with the respective segments of 
the body, and the tail is reduced to a rudimentary condi- 
tion. In CeErcops the tail, though rudimentary in 
appearance, has, according to Kroéyer’s figure, but one 
segment wanting. The absence of the natatory appen- 
dages, as well as of the first two pairs of walking legs, 
approximates this genus to Caprella. It is clear, there- 
