405 
very thin, with the pubescence exceedingly delicate and rather short. 
The fourth pair is a little shorter than the fifth, exceedingly thin, 
with the pubescence more visible. The third pair (fig. 2 b) is al- 
most three fourths as long as the fifth, each seta terminates in 
a large, oblong bulb, which is a little more than twice as long as 
thick, about one fifth: of the whole length of the setæ, naked and 
hollow; the seta increases gradually somewhat in thickness from the 
base to the bulb, it is naked at the base, and 'outwards it is elo- 
thed with gradually more conspicuous, short, vertical pubescence. — 
The dorsal setæ on the last segment are very short. 
Anal Segment (fig. 2c). Very similar to that in P. simulans. 
The tergum with the submedian setæ inserted rather near the mar- 
gin, short, cylindrical and considerably shorter - than the distance 
between them; the intermediate setæ are still shorter and inserted 
rather near the lateral setæ which are a little longer than the sub- 
median pair. — The styli are shaped as clavate hairs and scarcely 
as long as the submedian setæ. — The sternum with the posterior 
setæ between four and five times longer than the. submedian pair, 
while the lateral pair is about as long as these. — The anal plate 
is considerably broader than long, the lateral margins are convex, 
posteriorly the plate has a very broad, moderately adeep incision 
which is strongly narrowing: the result is that the plte terminates, 
in two lateral, short, broad, triangular branches with acute end. 
Legs.… They are very short and increase scarcely in length 
posteriorly. The last pair (fig. 2d) is shorter than in any other 
Species and very robust; the femur is about as long as the tro- 
Chanter, as long as thick and slightly shorter than the tibia, which 
is one third longer than thick; the tarsus is unusually thick and 
One third longer than the tibia. The hairs on coxa and trochanter 
are simple and clavate; the seta on the tibia is only one fourth 
as long as the joint. 
Copulatory Organs (fig. 2 ss Seen from the side they are 
Only a little longer than thick, slightly eonical in two thirds of the 
