lo TETTIGID.E OF NORTH AMERICA 



singular instance of this protective resemblance at one point 

 was discovered where fragments of reddish bits of insect 

 borings, fallen from outstretched limbs of trees, were exactly 

 matched with a patch of color on the pronotum, usually in front 

 of the shoulders and on the sides. Mottlings of various kinds 

 upon the hind femora still further helped to protect the species 

 on the ground. Half dead and bleached grasses, sedges, and 

 other plants which give a yellowish cast to the ground, along 

 with the ripened seeds falling in profusion, add shades of reds 

 and browns. In this environment was noticed a Tettix 

 with the back a light grayish fuscous, conspersed with whitish 

 granulations, and a strongly marked banner spot between the 

 shoulders of rich yellow ochre. This banner spot broke the 

 continuity of surface and was perfectly protective, and the same 

 individual was still further adorned by the same shade of yel- 

 low on the pronotal process and knees of the hind femora. 

 But the ornamentation did not cease here, for two triangular 

 spots behind the yellow banner spot, and a dark edging in 

 front of it, was present. The eyes were hyaline above, a 

 blackish stripe passing through the middle horizontally, and 

 spoke-like radiations from the center gave a hazel appearance 

 to them. Annulations of fuscous on the legs and antennae 

 added to the effectual protection of this species. The femora 

 at the middle third was tinted a bright sienna. It seems from 

 these observations and others previously noted that it is para- 

 mount to the perpetuation of the species that colors must vary 

 through a wide range in individuals of the same species. The 

 picture presented to the mind on viewing the live insects in 

 their natural environment is far more satisfactory to the 

 student of color than viewing the changed or darkened cabi- 

 net specimens. Observation taken at Riverside, Illinois, 

 August iS, 1899. See further observations in sequence. 



HABITS. 



Many if not all of the species of TettigidjE in the temperate 

 region hibernate, secreting themselves among debris such as 

 dead leaves, twigs, mosses, grasses, as well as under logs and 

 bark, and in the little crevices in the earth where they happen 



