190 Proceedings of the Royal Physical Society. 
Epigyne—This resembles that of C. grisea in general plan, but is 
easily distinguished by its much greater breadth and by other details. 
The female of this species is quite recognisable. 
This species belongs to a group of Clubionz with very similar sexual 
organs. All of them have a trifid tibial apophysis with the inferior branch 
barbed. All have the pale external and dark internal apical palpal 
processes, and all have somewhat similar vulve. 
This group contains five other species of which three, C. reclusa Camb., 
C. grisea L. Koch. and C0. subsultans Thor, have already occurred in 
Britain. The other two are C. Kulczynshii de Lessert, and C. interjecta 
L. Koch., the former Swiss, and the latter Siberian. I have never seen 
either of these, but from the figures of Dr de Lessert and Professor 
Kulezynski, they cannot be confounded with the present species. 
Clubiona humida occurs amongst moss and sphagnum in_ several 
swampy localities in Delamere forest. Up to now ©. grisea L. Koch 
(C. stagnatilis Kulez.) has not occurred there. The present species 
becomes adult in October, and some individuals survive the winter and 
can be found in the following spring. 
EXPLANATION OF PLATE, 
1. Micryphantes nigripes Sim. Left palpus from outer side, showing lamella character- 
istica, 
2. ~ 3 Lamella characteristica of left palpus from outer side and 
below. 
3. Dismodicus elevatus C. L. K, Right palpal tibia from above. 
4, Dismodicus bifrons Bl. Right palpal tibia from above. 
5. Dismodicus elevatus C. L. K. Right palpal tibia from inner side and slightly above, 
showing external apical angle shown at a. 
6. Dismodicus bifrons Bl, Right palpal tibia from inner side and slightly above, 
showing external apical angle shown at a. 
7. Clubiona hwmida sp. nov. Left palpal tibia from above. 
8. 3 x 33 The same from the outer side. 
In Figs 7 and 8 d represents the extra branch of the tibial apophysis. 
9. Clubiona humida sp. nov. Apex of left palpal organs from below. 
10. + . 4 The same from the outer side. 
11. 3 i Epigyne from below. 
12, Clubiona grisea L. K. Epigyne from below. 
(Issued separately, 18th May 1915.) 
