68 PALAEGYGE BUITENDIJKI. 
Pal. dispar), — Bonnieri (on Pal. lar), — fluviatilis (on 
Pal. lampropus), — de Mani (on Pal. pilimanus), — brevipes 
(on Pal. endehensis), — incerta (on Pal. bariensis). 
Female. The largest specimen has a length of 17 mm., 
its breadth being 18 mm. at the level of the third segment; 
the smallest one measures only 11 mm. in length and breadth. 
Palaegyge Buitendijki: Fig. 1. Dorsal view of female. Fig. 2. Under 
surface of first odstegite of the left side. Fig. 3. Left maxilliped. Fig. 4. 
Under surface of the pleon of the male. 
It is therefore larger than any of the species hitherto 
recorded, Palaegyge Bonnieri and — Borrei attaining only 
a length of 14 and 15 mm. 
The body is heartshaped with a slight concavity in its 
posterior region, either on its right or on its left side, 
probably depending on which side it was fixed to its 
host. The dorsal surface is nearly flat, with spots of 
Notes from the Leyden Museum, Vol. XXXII. 
