30 



PSYCHE. 



[February 1S9L 



The above is the earliest notice of D. 

 12-punctata as a corn insect of import- 

 ance which I have seen. Unfortunately 

 the writer does not state whether his 

 conclusion as to the author of the injury 

 was the result of inference, or was ar- 

 rived at by carrying the larvae through 

 their transformations. From the fact 

 that he had not found pupae up to the 

 time of writing, it is proper to assume 

 that the transformations were not ob- 

 served. As a possible clue to one of the 

 original food-plants of the larva atten- 

 tion is directed to the fact that he found 

 the beetles abundant on an Aster 

 growing on cultivated ground. (From 

 its yellow color the plant would appear 

 to belong to some other genus. ) If, as is 

 not unlikely from an observation made 

 by Prof. Lugger and reported farther 

 on, the plants observed by Mr. Webster 

 are attacked by the larvae, the fact 

 may have an important economic 

 bearing-. 



During the years 1S89 and 1S90 the 

 injury from larvae to corn attracted at- 

 tention over a wide area of country. To 

 my knowledge it has been witnessed in 

 Virginia, Alabama, Mississippi, Louis- 

 iana, Arkansas, Kentucky, Illinois, 

 Indiana and Ohio. 



My own observations began July 15, 

 1SS9, and have continued, as other work 

 permitted, to the present time. A brief 

 notice of the insect, its habits and stages, 

 was printed in the Louisville Home and 

 Farm, Sep. 1, 1889, and in November 

 of the same year was followed by a more 

 elaborate account of the transformations 

 and descriptions of the stages, presented 

 before a meeting of the Association of 

 official economic entomologists at Wash- 

 ington. (See Insect life, v. 2, 179.) 

 The latter paper is embodied in what 

 follows, with the addition of observa- 

 tions made during the winter of 1SS9- 

 90, and the spring of 1890. 



(To be continued.) 



THE PARTIAL PREPARATORY STAGES OF 



RILEYANA HARVEY. 



HETEROPACHA 



BY G. H. FRENCH, CAKBONDALE, ILL. 



In 1S87 I found larvae of this species 

 feeding on the honey locust in two 

 stages of their growth. At the time I 

 was feeding quite a number of other 

 larvae and did not make so full notes of 

 these as could be desired, but what I 

 did make are as follows : 



Length, .45 inch. The body flattened be- 

 neath, the back rounded, head small, a fringe 

 of white hairs on each side of the bodv. Color 



reddish brown with an indistinct dorsal stripe 

 of a more distinct red, a stigmatal blackish 

 stripe ; head black, with a longitudinal fulvous 

 line each side of the middle and a transverse 

 line of the same about the middle of the 

 front. 



Next to last stage : — Length at moult .60 

 inch. Shape as in the preceding. Brownish 

 red on the dorsum , but joints S and 9 gray on 

 the sides leaving only a narrow dorsal brown- 

 ish red stripe; joint 6 gray but less distinct. 



