190 
investigations on April 6th, 1920 I found only young ani- 
mals. Taking three of them home I found that one was 
Q and the two dd. 
In spite of most energetic research on the said loca- 
lity I never found any other species of the genus 7ha- 
natus. This, I think, is sufficient proof that the animals 
found there by me are males and females of the same 
species (striatus C. L. Koch). Moreover it seems very 
probable, that the animals hibernate as nearly full 
grown. The last casting of.the skin must take place 
early, i. e. in this country in late April or early May. 
Immediately upon this the matching follows, after which 
the males die, probably eaten by the females. This is the 
simplest explanation of the fact that no males have been 
found before. 
The male answers, as said above, the description of 
Th. ursus E.S. very close. The tibia of the palp is very 
5 characteristic [see fig.], and in ad- 
dition to the dark point of the 
distal end of the bulb this point 
being bent at a right angle there 
is on the distal inner rim of the 
Fig tate pane lower side of the bulb a small 
Thanatus’ striatus C. “Ly Koch. Ticht sbrown TO SES SUS Astral 
pointed and pointing forward (which the illustration does 
not show, as seen from above). 
C. L. Koch writes, that the species striatus is found 
on moist meadows. This seems to correspond with the 
locality mentioned by Simon for ursus E. S. — In nor- 
thern France, England and Denmark however the 7A. stri-’ 
atus seems to have been found in downs only, and of 
course there is a chance that a very minute examination 
may lead to the conclusion that this is a- question of 
two very closely related species or possibly two varieties 
of one species. Surely yet 7A. ursus Simon is identic 
with the otherwise unknown male of striatus Koch, both 
