(33) 
I1l.—Wotes on damage done to Wheat by Cucujus monilicornis 
and Calandra granaria. By T. J. Bou. 
[Read Nov. 23, 1846.] 
I save frequently had my attention drawn to the damage done 
to warehoused grain, by the corn weevil (Calandra granaria, 
Linn.) ; and recently, an instance has come within my notice, in 
which it has been accompanied by another small coleopterous 
insect (Oucujus monilicornis, Marsh.), and this circumstance hav- 
ing enabled me to form something like an estimate of the loss 
which they occasion, I am induced to bring before the Club a 
few notes on the subject ; hoping that they may not be without 
interest, especially as no English author has given any direct 
computation of the havoc committed by those pests. 
A parcel of two hundred quarters of Rostock wheat, of fine 
quality, weighing 6libs. per Winchester bushel, was bonded in 
the summer of 1844 ; and from causes which it is here unneces- 
sary to mention, was allowed to remain in the warehouse until 
the latter part of this summer (1846). When sampled it was 
found to be of various weights ; 60 qrs. weighed 441Ibs. per 
bushel; 80 qrs. weighed 463Ibs., and the remaining 60 qrs. 
56iibs., being an average of 49Ibs. ; and shewing a deficiency 
of 12%bs. on each bushel, or 96ibs. per qr. ; and on the whole 200 
qrs. a deficiency of 19,200ibs.; equal in measure to 38 qrs. 6 
bushels ; which at the present (Nov. 4) market value of 64s. per 
qr., will amount to 124/., nearly one-fifth of the total value of the 
wheat. But it must be remembered that this calculation is made 
on the mere loss of weight ; without noticing the great deterior- 
ation of quality ; for it will be seen, by the sample exhibited, 
that the insects have taken the farinaceous, or internal portion of 
the grain, leaving the outer portion, consisting merely of the 
husk or bran ; and what is left is rendered so “ unsweet ” as to 
be totally unfit for human food ; consequently, its value is so 
VOL. I. F 
