Hungerkord: The Toad Bug. 165 



EIGHTH PAIR. 



Pair from Chanute placed in stcnder labeled la, June 2. The fe- 

 male died June 10. Eggs hatched June 24 and June 28. Incuba- 

 tion period at least 14 days, likely longer. 



NINTH PAIR. 



Female emerged from one of the rearings (11) on August 31, from 

 a nymph that hatched June 22. Added a male, but no mating ob- 

 ser\ed, and female died October 10. 



TENTH PAIR. 



Female emerged from one of the rearings (Ik) on August 10, from 

 nymph that hatched June 21. Placed a male with her and matings 

 were observed on August 13, 15 and 18. No eggs w^ere found after 

 most thorough search. Female died November 4. 



DESCRIPTION OF STAGES. 



(See plates XIII and XIV.) 



THE EGG. 



Size. Length, 1.25 mm.; diameter, .91 mm. 



Shape. Broadh' oval. The sui-face is roughly granular and marked into 

 regular hexagonal areas bj' thickened ridges of the chorion. 



FIRST-INSTAR NYMPH. 



Size. Length, 2 mm.; width of thorax, 1.4 mm.; width of head, 1.2 mm. 



Color. Eyes dark; body mottled to checkered obscurely, general color 

 sometimes light, sometimes dark. Legs and abdomen are usually marked a^ 

 described for later instars. 



Structural peculiarities. Eyes larger relatively than in succeeding instars. 

 They are not placed upon as high elevations and the inner emarginations are 

 not marked. The beak is four-segmented; the antenuEe three-segmented; and 

 the tarsi appear one-segmented, terminating in two claws. The middle and 

 hind tarsi, however, have a short basal segment, making two. Lateral margin 

 of mesothorax less in length than that of metathorax. 



SECOND-INSTAR NYMPH. 



Size. Length. 2.5 mm.; width of thorax, 1.9 mm.; width of head, 1.5 mm. 



Color. Eyes still dark, not distinctly banded. Pattern obscured, that of 

 limbs and abdomen as in later instars. 



Structural peculiarities. The inner emargination of the eyes a little more 

 marked than in the preceding instar. Lateral margin of mesothorax equal in 

 length to that of metathorax. 



