PALAEGYGE BUITENDIJKI. 69 
black pigment on the 24, 3d, 4th, 5th, 6th and 7th somite 
along its concave border; also the head shows a narrow 
black stripe on both sides of its inferior part. The ventral 
surface, however, has larger and darker spots of pigment 
on the oöstegites of the 1st—5th pereiopode, lying on the 
same side as those of the dorsum. The head is cordiform, 
with its anterior margin slightly convex and its remaining 
part inclosed in the first somite, that is strongly bent for- 
ward, very narrow in the middle and enlarged laterally. 
Also the 2d, 3d and 4th somite have their lateral parts 
much broader and are there provided with an elliptical 
ovarian bosse, showing a pleural lamella of about the 
same shape. The 5th, 6th and 7th somite are laterally not 
much broader than in the middle, overlapping each other 
with their pleural parts; their ventral sides are roughened by 
parallel rugae. The segments of the pleon are distinctly 
separated from each other; the last one (6th) is triangular, 
with a rounded base, slightly emarginated in the middle. 
The antennae are rudimental and could hardly be recog- 
nized; the inner ones seem to be composed of three joints, 
of which the both inferior ones are cylindrical and of about 
the same size, whereas the distal one is much smaller. The 
outer antennae seem to consist only of a single joint, of an 
obtuse conical shape. The beak with the mandibles and 
the second pair of maxillae have the usual shape. | 
The maxillipeds have an elongated quadrangular shape, 
with an incision at their inner border at about a third of 
their length; their surface shows three transverse, parallel 
folds beneath the articulation of the palp, that is furnished 
with four hairs along its inner margin. The inferior lamina 
of the head consists of a small pointed process in the 
middle and two larger lateral ones; the innermost of these 
is small, tongue-shaped, whereas the external one is ensiform. 
The brood-pouch is open, encircled by the five pairs of 
oöstegites; the four anterior pairs of these have a rounded 
quadrangular shape, whereas the last pair is long, ensiform, 
overlapping each other with their distal ends. The first 
Notes from the Leyden Museum, Vol. XXXII. 
