15 
The average measurements of the different instars of changas bred 
from the egg and from individuals taken in the field are shown in 
the following tables : 
Average measurements of changas. 
BRED FROM EGG TO ADULT STAGE. 
Instar. 
Pronotum. 
Wing pads. 
Body 
length. 
Length. 
Width. 
1 
2 
1 
Mm. 
l-9 3 5 
2.946 
4.138 
4.933 
5.831 
6.5»7 
7.1l5 
7.6h 
7.8i4 
7.6 5 
7.99 
Mm. 
I.63 
2.44 
3.4a 
3.922 
4.S £0 
5.3:o 
5.9i5 
6.5i4 
6.9u 
6.8 6 
6.99 
Mm. 
Mm. 
Mm. 
6. lie 
8.9i 
2 

3 
13. lj 
4. . 
16.36 
2.09 
4.9i<. 
2.I4 
3. lis 
6.3„ 
18.9: 
6 
21. 4o 
7 
23. O9 
8. . 
26.6n 
Adult. .. 
12.2e 18.3 6 
12.3 3 19. 2 3 
12. 1 3 
27.5s 
27. 5 4 
Male.. 
27.04 
CAPTURED IN FOURTH INSTAR OR LATER AND BRED TO ADULT STAGE. 
7.. 
Adult 
Female. 
Male.... 
7. 6i« 
5.9s 
2.7 2 
3.2 6 
8.326 
6.626 
5.2 2 o 
6. 7^ 
9.170 
7.370 
15. 513 
20.7s 
8.938 
7.338 
15. 6ie 
21.4m 
9.331 
7.431 
15. I7 
19. on 
25.2a 
26. 618 
30.4a 
31. lis 
30. 4» 
Note.— Inferior figures indicate the number of individuals averaged. 
MOLTING. 
Molting, as a rule, takes place underground in a cell constructed 
for the occasion and similar in shape to the egg chamber, though the 
process can be successfully accomplished above ground also. The 
skin splits dorsally from the front margin of the thoracic shield to 
about the third abnormal segment (PL I, fig. 2). First the thorax 
and abdomen are freed, and finally the head, legs, and antennae. The 
entire process takes less than half an hour, and within two or three 
hours the body has regained its normal colorations. For a week or 
more before molting the changa is noticeably yellowish in color, and 
the wearing off of the pubescence covering the body gives it a greasy 
appearance. After molting the changa is dark brown to black, with 
a fresh, velvety appearance produced by the new pubescent coat. 
Two males reached the adult stage with the normal tegmina of 
this species, but with metathoracic wings aborted and completely 
hidden by the fore w T ings. Not uncommonly changas in capacity are 
found unable to free the legs and mouth parts in molting. 
