1915] Andrews: Survey of Lake Butte Des Morts Bog 
207 
TABLE V 
Mowing those animals which were active on the area of observation from 
August 1-August 10 
ORDER 
SPECIES 
5.30 
A. M. 
7.30 
A. M. 
9.30 
A. M. 
11.30 
A. M. 
1.00 
P. M. 
3.30 
P. M. 
5.30 
P. M. 
Aves 
Agelaius phoeniceus phoe- 
niceus 
* 
* 
* 
* 
* 
* 
* 
Butorides virescens vires- 
cens 
1 
Rana pipiens 
* 
* 
* 
* 
Chorophilus nigratus 
1 
1 
1 
Odonata 
Libellula pulchella 
1 
1 
9 
o 
Amphiagrion saucium 
1 
1 
4 
L 
5 
3 
1 
Leucorhinia glacialis 
1 
Lestes rectangularis 
3 
1 
1 
Basilarchia archippus 
1 
1 
1 
1 
1 
Orthoptera 
Nemobius fasciatus 
1 
o 
Nemobius palustris 
A 
1 
1 
4 
4 
Xiphidium fasciatum 
Ephemerida 
Hemiptera 
Diedrocephala 
4 
Ceresa bubalis 
2 
6 
Diptera 
Scatophaga callopistra an- 
nulipes 
2 
Stomoxys calcitrans 
2 
3 
Phormia regina 
1 
Phorbia fusciceps 
2 
2 
2 
1 
Toxomerus germinatus 
2 
Stratismgia normula 
1 
Syritta pipiens 
1 
Leucomelina garrula 
1 
Lucilius caesar 
1 
Coleoptera 
Pyropyga fenestralis 
2 
1 
4 
Calopteron reticulatum 
1 
3 
2 
Pterosticus lucublandus 
2 
Pyropyga decipiens 
1 
Hymenoptera 
Halictus hortensis . . . 
1 
Prosopis modesta 
1 
Arachnida 
Coelotes fedelis 
2 
2 
2 
2 
2 
2 
2 
Reptilia 
Chrvsemvs hellii 
1 
1 
2 
1 
Crustacea 
Cambarus diogenes . . 
3 
3 
3 
3 
3 
3 
3 
Mollusca 
Succinea retusa 
5 
5 
1 
1 
3 
3 
3 
present in great numbers during the second and third weeks of 
July. One reason for their disappearance was probably the fact 
that these insects were esteemed a delicacy by many of the larger 
insects, the damsel flies, especially, pursued and devoured them in 
great numbers. 
The dragon flies seem almost never to pause for rest. Some 
catch their prey while flying, eat it while flying, and some of them 
