46 ENTOMOLOGICAL NEWS. [Feb., '06 



table of this genus by this character impossible, but enough 

 matter of value remains that I deem it expedient to offer these 

 remarks accompanied by the figures, and hope that it may 

 stimulate to further research in this direction. 



My observations were mainly made on the New Jersey 

 species, though a few others, so far not recorded from New 

 Jersey, have been figured. 



The figures are taken from females except Nos. 19, 32, 40 

 and 43, which are marked $ . 



The design of the male eye necessarily differs from that 

 of the female. The male eye being holoptic the design is 

 longer and drawn toward the vertex. As a rule it is indistinct 

 in the vertical region or fades away entirely, a reddish bronze 

 lustre frequently taking its place. The upper spot near the 

 frontal margin is seldom recognizable. The middle spot, gen- 

 erally present, rarely corresponds in shape with that of the 

 female. It is generally elongated toward the vertex, in which 

 direction it frequently loses its definite contour. In C. calli- 

 dus the shape of lower frontal spot and its contiguity to the 

 frontal margin (Fig. 19), in C. mocchus the arrow-head (Fig. 

 32) betray the identity with their respective females. The 

 m&\efallax resembles the female in its linear shaft which is 

 disconnected from the arrow-head and occipital border (Fig. 

 40). On account of their scarcity the eyes of males of only a 

 few species have been studied. 



The normal eye of Chrysops consists of six purple spots on 

 a green ground-color. 



1. The occipital border, generally indentated in the middle, 

 along the occipital margin. 



2. The arrow-head, in front of the indentation of the occip- 

 ital border, pointing downward. 



3. The shaft, either attached to or disconnected from the 

 arrow-head, upwards. 



4. The upper frontal spot 1 



5. The middle frontal spot V along the frontal margin. 



6. The lower frontal spot J 



It does not matter what shape these spots assume or in 

 what manner they combine with each other, these six spots 



