Ill 
Another enemy of some interest, although probably of small impor- 
tance, is the wasp Eumenes hollii Cress. On one occasion a nest of 
this species was found by Mr. Bishopp on a cotton leaf at Ladonia, 
Tex. The nests are constructed of mud and stored with caterpillars 
as food for the young wasp grub, which matures inside the clay nest. 
There can hardly be any reasonable doubt that the wasp building in 
this situation made use of bollworms for storing its nest. 
Quite a number of spiders were observed at various times destroying 
the bollworm in its different stages. In three of these cases moths had 
been captured, once at Victoria by a large specimen of Lycosa riparia 
Hentz (PL XYIII, fig. 2), and again at Paris, Tex., and also at Ladonia 
b}^ a jumping spider (Attus fasciolatus Hentz). A specimen of the 
same species of Lycosa^ which was kept in captivity during the sum- 
mer, proved to be very fond of bollworm larvae and moths, devouring 
several during the course of a day. 
A small striped Attid spider (Dendryphantes imibilis Hentz) was not 
infrequently seen nesting beneath the involucres of the cotton squares 
at Paris, and on three different occasions they were observed with one- 
eighth to one-fourth grown larvae which they had captured in these 
situations. Another form (Attus cardi- 
ncdis Hentz) was seen at Calvert, Tex., 
during August, 1903, with a half -grown 
bollworm in its jaws. 
No Texas ants have been observed in 
the act of capturing any large larvae or 
moths, and it is probable that none of 
them do so, except under very excep- 
tional conditions. Several times larvae 
which had most probably been previ- 
ously injured were being devoured by 
ants, and once a moth which had emerged 
under a jar in the garden was found dead 
soon afterward, literall}^ covered with 
the little yellow "thief ant," Solenopsis texana Em. That they were 
the cause of its death is, however, exceedingly doubtful. 
Among the beetles there are two groups which probabl}^ destroy a 
fair number of bollworms. Certain ground beetles, notably Oalosoma 
anguIatumChev.^ O. scrutator Fab. (fig. 17), O. calidum Fab. (fig. 18), 
and Ilarpcdus caligiiiosus Fab., all known to have a fondness for cater- 
pillars, are not infrequent in cotton fields and are probably of some 
22051— No. 50—05 8 
Fig. 1' 
-Calosoma scrutator: beetle 
(after Com stock). 
