353 
stance from each other at the base 
and longer than the styli. 
7. P. argentinensis n. sp. 
xx. The branches of the anal plate are 
not longer than their distance at the 
base and much shorter than the styli. 
9: Ps dantcus fi sp 
88. The upper antennal branch is shorter than the 
lower. The distance between the eyes only half 
as long ås their length. i 
20. P. simulans n. sp. 
tr. The anal plate is produced backwards into a nar- 
tt: 
Vidensk. Medd. fra den naturh, Foren. 1901. 
rowly rounded lobe between the two branches, which 
are inserted on the plate near the. lateral margins. 
11: (P. modestus un. sp. 
The anal plate has its lateral margins continued 
directly as the lateral margins of the branches, or 
as the margins of the outer longer branches, if an 
inner rudimentary pair is developed. 
S. The tactile setæ of tbe third pair are tapering 
or rarely subcylindrical towards the end. 
C. The upper antennal branch is somewhat 
longer than the lower. The lateral setæ 
on the tergum of the anal segment are 
very long, considerably more than half 
as long as the breadth of the segment. 
The anal plate with the lateral margins 
considerably converging backwards. 
12. P. Mortensenii n. sp. 
O0. The upper antennal branch is scarcely 
longer or even shorter than the lower. 
The lateral setæ on the tergum of the 
anal segment are short, at most one 
third as long as the breadth of the seg- 
23 
