362 
Locality . The specimens have been captured by Dr. F. Sil- 
vestri at Temuco iu Chile (April 4. 1899). 
Remarks. The large difference observed in both specimens 
between the length of the flagella on the lower branch is alone 
sufficient for the establishment of this species and separates it 
sharply from the three other species of the group; 1 never met 
with any variation worth mentioning in the proportion between the 
length of these flagella in specimens of the same species, whether 
I examined several specimens from the same place or from various 
localities. 
3. Pauropus intermedius n. sp. 
PI. II, fig. 3 a—3 d. 
Material. One adult and rather well preserved female. 
Head. In all respects as in P. robustus, only the intermediate 
hairs in the fourth row a little longer than the eyes. 
Antennæ (fig. 3 a). The upper one of the front hairs on the 
fourth joint as long as the three distal joints together and somewhat 
longer than the other. The upper branch is more than seven times 
longer than broad and even slightly longer than the peduncle; the 
flagellum as in P. robustus. The lower branch as in P. Huxleyi , 
the distal front angle being cut off rather shortly and only a little 
more obliquely than the hinder angle; the posterior flagellum is 
slightly longer than the anterior and a little more than two thirds 
as long as that of the upper branch. The globulus is moderately 
large, with its transverse diameter as long as that of the upper 
branch; the stalk is very short. 
Trunk (fig. 3 b). Moderately robust. — The fifth pair of tac- 
tile setæ is scarcely twice as long as the breadth of its segment, 
otherwise as in P. Huxleyi ; the fourth and third pairs are wanting. 
— Of the setæ on the last segment only one of the posterior pair 
is preserved, it is unusually long and two thirds as long as the 
distance between the fifth pair of tactile setæ. 
Anal Segment (fig. 3 b and 3 c). The tergum is posteriorly 
