506 Observations on various Insects affecting tlie Com Crops. 
Fig. 22* The head in profile. 
7>i The concave face. 
Fig. 23. The fly in repose. 
Fig. 25. The lower portion of the wheat-stem, detached from, and 
belonging to, fig. 24, pi. k. 
0 The pupa of Chlorops tccniopus, in situ. 
Fig. 26.* The same magnified. 
Fig. 25. a Pupa case from which Ccelinius niger hatched, 
b* The same magnified. 
c The hole from which the Ccelinius escaped, 
d The hole from whence the Pteromalus made its exit. 
Fig. 27. A wheat-plant as it appeared on the 7th of June. 
Fig. 28. Lurva of a Chlorops. 
Fig. 29.* The same magnified. 
Fig. 30. The pupa case in sitd. 
q* The same magnified. 
Fig. 31. Oscinis rastalor, Q,\iiii&. 
r* The same magnified. 
71 The termination of the costal nervure. 
Fig. 32. Corn-plant as it appeared on the 23rd of June. 
s The green outer leaf. 
t The inner \'ellow one. 
Fig. 33. The same plant opened. 
u The base of the stem eaten through. 
Fig. 34. The interior of the stem exposed. 
V A slender brown portion of the stalk left by the larva. 
w The larva feeding. 
X* The same magnified. 
7/ The pupa in the stem. 
z* The same magnified. 
Fig. 35. Calinius niger ^ a parasite. 
Fig. 36.* The same magnified. 
Fig. 37. Pteromalus micans, a parasite. 
Fig. 38.* The same magnified. 
Fig. 39. Sigalphus cuudatus, a parasite. 
Fig. 40.* The same magnified. 
Obs. — Wherever lines accompany the objects in the plates, they 
denote the natural dimensions ; and those numbers and letters with a 
* attached, refer to the objects that are represented much larger than 
life. All the figures are drawn from nature, excepting Nos. 1, 2, 3, 4, 
and 8, 9, 10, and 11 : the four first arc copied from the Linnscan Trans- 
acti(ms, and the other four from Sturm's Deutschlands Fauna, vol. iv., 
pi. xcviii. 
Hagcs, Middlesex, Nov. 1844. 
Tlie Copyright of this Paper ia reserved to the Writer. 
