The Structure and Life-history of the Cockroach (Periplaneta orientalis) / An Introduction to the Study of Insects

by L. C. Miall; Alfred Denny

Fig. 78.—Tracheal System of Cock­roach. Top and front of head seen from with­out. × 15.

Fig. 80.—Tracheal System of Cock­roach. The dor­sal in­tegu­ment re­moved and the vis­cera in place. × 5.

Fig. 81.—Tracheal System of Cock­roach. The vis­cera re­moved to show the ven­tral tra­cheal com­muni­ca­tions. × 5.