200 PYGIOPSYLLA ROBINSONI. 
parallel to the four distal bristles of this row a marginal 
row of 4, of which the distal one heavy ; near this latter two 
smaller ones, — Tibia like the protibia. — Tarsus formula 1, 5, 
2, 3, 4; as for the rest like the protarsus. Internally: coxa with 
5 minute hairs in its anterior proximal angle; femur bare; 
the rest of the leg like in the foreleg. 
Hindleg. Externally: coxa with 3 minute hairs on the 
proximal edge before the implantation; a row of about 10 
bristles on the anterior edge, the distal one being double; 
parallel to this row about four marginal rows, each of 
about 6 bristles of the same shape, and three minute hairs 
on the proximal edge behind the implantation. — Trochanter 
with one and two bristles on the anterior edge, and two 
smaller ones exteriorly. — Femur with two bristles on the 
anterior proximal protuberance, behind which there is a 
smaller one; two or three bristles on the distal anterior 
margin; about 15 bristles on the posterior edge, of which 
the distal one heavy; parallel to the last four of this row 
a marginal row of four bristles of which the distal one 
short, thick and almost black; near this spine two small 
bristles. — Tibia with 7 notches and double bristles, as for the 
rest like the pro- and mesotibia. — Tarsus formula 1, 2, 3, 5, 4, 
the first joint as long as the last three together; the 
last joint differs from those of the other legs in having 
the subbasal and submedial bristles removed so far laterally 
that in fact there are 6 lateral bristles; the first three 
joints thicker and bearing only two subapical bristles. 
Length of { 2,6 to 2,8 mm. — Two QQ and two oo" were 
found in a nest of Sciurus notatus Bodd. by Mr. Edw. Jacob- 
son in Batavia, Aug. 1908. The nest was made in a 
cocoa-tree. One pair is in the Leyden Museum, the other — 
in my collection. 
Arnhem, September 1909. 
Notes from the Leyden Museum, Vol. XXXI. 
