GYGE GALATHE. PVA 
considerably decrease in the dimensions of the prehensile 
portion, and have the palm somewhat convex and 
serrated, the dactylos short and thick. There appears to 
be no distinct pleopoda or branchial appendages of any 
kind, but the thin lateral extremity of each segment 
appears to be considerably attenuated and to be traversed 
by numerous channels, which must necessarily assist very 
considerably in bringing the vital fluids into close approx- 
imation with the oxidizing influence of the water. 
The female is oval, broad, but little more than half as 
long again as the male. Anterior portion of the animal 
only, unsymmetrical. Head partially fused with the first 
segment of the body, first segment short, the second 
scarcely longer, the five posterior segments subequal, longer 
than the first two. Those of the tail (pleon) gradually 
decrease until the sixth, which terminates in a small 
forked extremity, being the rudimentary condition of the 
posterior pair of pleopoda, which are so largely developed 
in the larval condition. 
The eyes are wanting. The antenne are rudimentary, 
each pair consisting of a single basal joint, not longer 
than broad, and an apical small spine or second joint. 
The oral organs converge to a point, and are situated 
below and between the antennz ; these are covered and 
protected by the maxillz, and the oral appendages deve- 
loped in the form of large fleshy scales, somewhat similar 
to but thicker than the ovigerous plates that spring from 
the base of every leg. 
The pleopoda or branchial appendages consist of small 
sacs attached close to the under surface near the extremity 
of each segment, while a membranous ridge or fold 
reaches from one extremity to the other. 
The young animal as it appears when just able to quit 
the parental pouch, is dorsally arcuate, the cephalon 
Qe2 
