394 
gura, slightly longer than the distance between thern, and they are 
placed near the posterior margin; the intermediate pair is some- 
what shorter than the submedian and as far from the last-named 
setæ as these are removed from each other; the lateral pair is one 
half longer than the submedian setæ. — The styli are somewhat 
shorter than the submedian setæ, setiform and slightly clavate. — 
The sternum with the posterior setæ nearly four times longer and 
considerably thicker than the submedian dorsal setæ, cylindrical; 
the lateral pair is somewhat shorter than the lateral dorsal setæ. 
— The anal plate is small, with the margins subparallel or somewhat 
diverging posteriorly, and (without the branches) somewhat longer 
than broad; seen from above it terminates in two subparallel bran¬ 
ches which generally are somewhat shorter than the plate, and 
their outer margin is a continuation of the margin of the plate; 
just below these branches the terminal parts of two other branches 
are seen; wlien the segment is examined from the side (fig. 2 e) 
one observes two branches originating from the hind margin of the 
plate, and of these branches, which are considerably diverging, the 
lower one is somewhat longer and thinner than the upper. 
Legs. They are moderately robust, short and increase slightly 
in length posteriorly. In the last pair (fig. 2 f) the femur is as 
long as the trochanter, somewhat longer than thick and slightly 
shorter than the tibia, which is nearly twice as long as thick; the 
tarsus is one half longer than the tibia. The hairs on coxa and 
trochanter are biramous with rather thick branches; the seta on 
the tibia is not half as long as the joint. 
Copulatory Organs. Seen from the side (fig. 2 g) they are 
rather thick, the basal half is cylindrical, the distal one shortly co- 
nical with acute apex. 
Length. Adult and extended specimens measure *86 mm. 
Variation. A very small somewhat contracted adult female 
(from the Island of Møen) measures only *41 mm. and differs some¬ 
what in other respects. The median part of the tactile setæ of 
the third pair is considerably less thickened than in other speci- 
