336 
stinet; on the posterior side the free pad is well developed but I 
could not detect any secondary claw near its base; on the anterior 
side is found a very small, siender, curved claw, corresponding to 
the large pad terminating in a claw in Pauropus. — In Eurypau- 
ropus Latzelii (?) the real claw is very long (pi. VI, tig. 4 m), 
shaped almost as in Pauropus , but without a distinet basal pad; 
in front of this claw is found a very small claw (n), while notliing 
is observed on the posterior side. 
In all Pauropoda the coxa and the trochanter are each ad- 
orned witli a hair on the ventral side; this hair is often simple, 
cylindrical or clavate, not rarely biramous, and in Eurypauropus 
it is very curious. More will be said on these hairs in the descrip- 
tions of the families and the species. Furthermore, the tibia and 
the metatarsus, or, this being not marked off, the tarsus possess a 
hair or seta, the length of which presents a specific character. The 
tarsus has always a minute hair on the dorsal side at a short distance 
from the end; at least in some species ot Eurypauropus (E. ornatus 
Latzel and E. Latzelii Cook (?)) the tarsus has a ventral seta not 
existing in the other families. 
Remarks on other Characters. The two sexes are always ea- 
sily distinguished in adult specimens by the presence or absence 
of copulatory organs at the base of the secoud pair of legs. Each 
of these organs consists of a basal portion or foot, on which is 
inserted the glabrous and more or less conical organ which always 
has a fine and stiff seta on or near the distal end. The shape of 
tlie organ presents specific characters, and I have figured the major 
part of the organs observed. But my material being scanty, I would 
not damage the animals by pressure; some of the organs have 
therefore been described and drawn seen from in front and others 
seen from the side. In immature males with eight pairs of legs 
I have found the organs smaller and less developed than in the 
adults; in one species, Paur. spinifer, of which I only possess an 
immature male, the organs are as large as in adult males of se ve¬ 
ral other species, nevertheless they are scarcely arrived to full de- 
