20 
in a number of localities in which it was not known by the planters 
themselves to occur. It is important that every planter who lives in 
or near the region which we have mapped out should be able to dis- 
cover the weevil as soon as it makes its appearance in his fields. 
Where a field is at all badly infested, the absence of bloom is an indi- 
cation of the presence of the insect. In the early part of the season the 
weevils attack the squares first, and these wilt and drop off. <A field 
may be in full blossom, and as soon as the insect spreads well through 
it hardly a blossom will be seen. This dropping alone, however, is not 
a sufficient indication of the weevil’s presence. Squares are shed from 
other causes, but if a sufficient number of fallen squares are cut open 
the cause will be apparent. The characteristic larva of the weevil will 
be quite readily recognizable on comparison with the figures which we 
publish herewith. 
As stated above, the bolls do not drop. The punctures made by the 
weevils in feeding, however, are comparatively characteristic, and 

Fia. 10.—Mature boll cut open at left, showing full-grown larva; the one at the right not cut, and 
showing feeding punctures and oviposition marks (author’s illustration). 
where a boll is discolored and has begun to crack at the tip the larva 
or the pupa can be seen without trouble on cutting it open. Late in 
the season the weevils themselves will be found between the involucre 
and the boll, as shown in fig. 11; or in their absence the feeding marks 
and the yellow, granular excrement which collects in the involucre at 
the base of the boll are excellent indications. 
PARASITES AND NATURAL ENEMIES. 
It is safe to say that little assistance will be derived from the work 
of natural enemies and parasites upon this insect. Of the former none 
of any importance have been found. Several parasites, however, have 
been found to attack it, and in one or two localities some little good 
has resulted from their work. They have only been abundant, how- 
ever, late in the season, after the weevil has completed its damage for 
the year, and at a time when a minimum of good can be accomplished 
——— 
