Illustrations have been moved out of mid-paragraph.
Figures repeated from Volume I have been added to the
Table of Illustrations.
On page 246 (Fig. 125, B and C) has been corrected to
Fig. 124, B and C).
On page 216 Fig. 118, D, has been corrected to Fig. 122,D.
In the index, Reproductive cells, development of, in Diptera,
has been corrected from 471 to 411.
In the index, Spontaneous generation, ii. has been corrected
to Spontaneous generation, and thus refers to volume I.