70 PALAEGYGE BUITENDIJKI, 
oöstegite has an other posterior lamella, situated more in- 
ternally and separated from its anterior part by a fold; its 
posterior margin is concave and hook-like elongated exter- 
nally. At the inner face of this lamina the fold is limited 
superiorly by a strong ridge, fringed with digitate processes. 
The pereiopods have the usual structure; like as in Palaeg. 
Borrei their basipodite at its external side is provided 
with a large, rounded protuberance beset with small spinous 
scales. 
There are five pairs of pleopods, nearly entirely hid- 
den under the pleon, only the last pair extends some- 
what beyond its border at the right side; their exopodite 
and endopodite consist of a rounded triangular lamina, about 
of the same size, overlapping each other with their inferior 
part. The uropods are represented by two small tubercles, 
situated at the base of the last segment. 
Male. Under the pleopods of nearly every female a 
male individual was found; its body, somewhat contracted 
in the middle, has a length of 3'/, mm. The head showsa 
pair of pigment-spots, the rudiments of the eyes. The 
pleon has only the four anterior segments distinctly sepa- 
rated from each other, each provided with a pair of small 
tubercles, the rudimentary pleopods; the fifth and sixth 
segment are fused, forming a heartshaped piece. 
Leyden Museum, December 1909. 
Notes from the Leyden Museum, Vol, XXXII. 
