110 INTERNAL ANATOMY OF INSECTS. 
The next insects whose alimentary canal we are to 
consider, are those which, taking their food by suction, 
have no occasion for masticating organs: this may in 
part be predicated of the preceding Order, in which 
most of the tribes in their perfect state zmbzbe fluid food, 
and use the ordinary organs of mastzcation principally in 
operations connected with their economy; and their crop, 
in which the honey in many is stored up for regurgita- 
tion, may be regarded in some degree as analogous to the 
food-bag of the Diptera and other suctorious insects. 
The two sections of the Hemiptera Order differ widely 
in the canal we are considering, and I shall therefore 
give a separate account of each. In the Heteropterous 
section, appended to the gullet by a long convoluted ca- 
pillary tube, besides the usual saliva-reservoirs there is 
often a double vessel, which Ramdohr regards as dis- 
charging the same function, but which in many respects 
seems rather analogous to the food-reservoir of the Dz- 
ptera*. As I have had no opportunity of examining this 
vessel, I shal] content myself with stating this idea, and 
describe the vessel more fully hereafter. The gullet, in 
these, usually terminates in an ample crop consisting of 
many folds?, followed by a long, slender, cylindrical 
tube, dilated at its base into a spherical tumour; these 
two may be said to form the first stomach: to this suc- 
ceeds a second’, which Ramdohr denominates the bug- 
stomach (Wanzen-magen), which varies in its figure, and 
in Pentatoma consists of four demi-tubes, so as to forma 
Comp. Ramdohr ‘xxi. f. 3. M. Fic. 4. 3. with ¢. xxi. f.1. 0. 
> Ibid. t. xxii. f. lic. f. 3,4. B—. © Ibid. f.1. D Ey. fd. GD): 
