228 GYGE GALATHEA. 
oan 
anteriorly broad and projecting hood-like over the an- 
tennz. The segments of the pereion are all present as 
well as those of the pleon, with which they are subequal, 
the last segment terminating in a central tubular 
process, the extremity probably of the alimentary 
canal. (See the upper right-hand figure.) 
The eyes are small, irregular blotches, situated within 
the lateral and near the posterior margin of the cephalon. 
The first pair of antennez are rudimentary, consisting 
of a basal joint of tolerably large proportions, and a ter- 
minal triarticulate flagellum. The second pair are more 
than half the length of the animal, and consist of three 
(or four ?) large joints and a terminal slender one tipped 
with four hairs, one of which is very long and strong and 
two very short. The four anterior pairs of legs have the 
propodos round and the dactylos short and curved, the 
three posterior pairs have the propodos long, narrow, and 
the dactylos straight. The last two differ from the ante- 
penultimate in having the carpus produced along the 
inferior margin of the propodos to the posterior angle 
of the palm. The pleopoda are five pairs, and consist 
of a series of foliaceous plates tipped with an external 
long and an internal short hair. The posterior pair of 
pleopoda are biramous, each branch being biarticulate, 
terminating in a fine hair-like point. 
The specimens from which these descriptions are taken 
were procured by the Rev. A. M. Norman at Herm, in 
Guernsey, on a specimen of Galathea squamifera. 
With the exception of a difference in the habits of the 
species, the one above described seems (so far as we are 
able to judge from the description and figures of both 
sexes, given by Messrs. Cornalia and Panzeri in their 
elaborate memoir above referred to of G. branchialis, 
which infests Gebia Venetiarum and littoralis), scarcely 
