﻿164 Neiv York State College of Forestry 



coxae ; dorsum of head tan colored and pubescent, two dark lines 

 on dorsal surface with dark area between them; a large ocellus 

 at posterior end of each of these lines ; dark patch on head behind 

 each eye ; ventral of head and prothorax light, the latter pubescent 

 above and forming collar for neck; characteristic design on raised 

 area of disc, anterior and posterior lines deeplj' impressed; 

 scutellum triangular in shape and with central, dark design ; wings 

 light tan, spotted w^ith dusky ; straight vein through clavus ; two 

 prominent veins through corium, inner one dividing, then uniting 

 again, forming a diam.ond-shaped cell near the posterior end of 

 the mid-dorsal commissure, the vein continuing along the posterior 

 border of the corium and giving otf long veins through the mem- 

 brane, these forming a roAV of open cells at the posterior border; 

 outer vein extending to outer posterior corner of corium and 

 giving off two branches about one-half the way along ; abdomen 

 with narroA¥, dark, mid-ventral streak and broader streak along 

 sides below lateral margin ; lateral margins refiexed slightly, con- 

 nexivium formed ; spiracle on ventral side of each segment of 

 connexivium surrounded by red ; last segment of male abdomen 

 rounded-up to meet dorsal tergum, dorso-lateral concavities present 

 to accommodate the claspers; last segment of female abdomen 

 rounded at sides and pointed at anterior end; forefemora barred 

 lightly on inner side, heavily on outer side, spotted above and 

 many small bristles below; tibia whitish and with double row of- 

 black teeth along inner side ; mesothoracic femora barred lightly 

 on inner and outer sides, a few spots above and many small 

 bristles below; metathoracic legs elongated, femora sparsely 

 spotted, tibia lightly spotted and brownish in color; tibia three- 

 jointed and dark at each end. 



Explanation of Tables 



The data submitted in the tables on pages — • and — ■ might aid 

 in showing the length of the five instars and the variation which 

 takes place. Only a few specimens are concerned here. They are 

 selected from those nymphs hatching July 4th and July 15th 

 and are those specimens which survived longest. 



The first four columns are complete for the time between June 

 Ifith and July 15th. The data of the two columns "Laid" and 

 "Hatched" does not necessarily apply as to position in the table, 

 since there was great variation in the length of the incubation 

 period and also since there was much difficulty in marking the new 

 eggs from day to day. The eggs of N. roseipennis are very easily 

 discerned but those of N. rufnsculns were at times barely per- 

 ceptible. 



The number in the sixth column indicates the dish in w^hich one 

 or more nymphs were living and the designation "No." indicates 

 the number of nymphs in a dish. 



Even considering the nymphs killed from each instar and pre- 

 served, the totals at the bottom of the page show a rather high 

 mortality. 



