252 Agricultural Experiment Station, Ithaca, N. Y. 



border, and a black spot occurs in a sligkt depression each side 

 of the snture near the caudal border. The eyes are large and 

 ])iomiuent, and of nearly the same color as the body except about 

 ilie ventral aspt^ct which is black; three minute ocella are situated 

 as shown in Fig. 7 at c. The antennae are about one and one- 

 half times as long as the width of the head and tipped with two 

 large bristles; the first joint is reddish, the tenth, ninth, and 

 distal half of the eight joints are black, and the remainder of the 



Figure 7. — A, head of adult, front view; c, cones of clypeus; o, ocelli; b, antenna of adult 



greatly enlarged. 



joints are light brown darker at their distal ends; the first and 

 second joints are together equal in length to the fourth, the 

 third is one and one-half times longer than the fourth, and the 

 others are of nearly equal length; joints four, six, eight and uinci 

 are each furnished with a large sensoria near their distal ends. 

 Fig. 7, b, represents an antenna highly magnified to bring out 

 the details of its structure; the hair line above the figure repre- 

 sents the natural growth. The three-jointed beak is black, and 

 I)asses through a deep groove just cephalad of the front coxae. 

 The pionolum is quite narrow; color, reddish black mesally with 

 a whitish spot each side, and another similarly slightly raised 

 spot near the lateral edge within a slightly depressed elongate 

 black spot. The praescutum of the meso thorax is large, convex, 

 triangular in outline broadesit caudad; color of cephalic half, 

 except a narrow mesal stripe, black which merges into the 

 crimson of the candid portion; the lateral angles and a small 

 tooth each side of the meson on the caudal border are whitish. 

 The scutum of the mesothorax which bears the front pair of 

 wings is large, convex and quadrangular in outline; color, a 

 broad crimson mesal stripe wider at the ends with a blackish 

 center; each side of this a fusiform black stripe which is sepa- 

 rated from a wider lateral black stripe by a narrow crimson 



