March, 1912.] MaTAUSCH : LiFE HiSTORY OF EnCHENOPA BINOTATA. 65 



Stages, I found the covering always very slight, only feebly developed 

 on the head and margins of the body. On the nymphs collected from 

 oak and walnut I have not seen any such covering. This covering is 

 only on the dorsal portions, and very little of it on the legs (the apex 

 of the femora and upper parts of the tibicx). The porous covering 

 shows best in the empty shed skins of the first two stages ; it is then of 

 a very brilliant white. It diminishes in every following stage and 

 there is none in the adult. I found the covering in the adult on the 

 head and prothorax only on one southern species from Brazil 

 (Splioiigosphorus) . This was of a yellow color. 



The color of the nymphs I had previously seen was always more 

 or less brown-gray, but they vary in color on the different plants, and 

 even on one and the same plant. The front parts become more or 

 less brown from pink, and sometimes on and above the head a little 

 greenish; the abdomen laterally more or less red-brown. This color 

 starts from the red markings, and gradually occupies the ventrolateral 

 parts and becomes somewhat darker and fades into greenish on the 

 dorsal region. Then in the later stages the insects acquire five lateral 

 rows of grayish-white markings. The abdominal prominences and 

 anal region are more reddish-brown, the fourth and fifth pair of the 

 former being in the last two nymph stages very dark. The hairs 

 which are long in the first stage, become short in the following 

 stages, but greatly increase in number, especially on the abdominal 

 prominences. The lateral white markings were found on the dark- 

 colored nymphs from Central Park, but more yellowish and only 

 slightly indicated. On the material collected at Newark. N. J-, on oak 

 and walnut last year, there was none of the lateral white markings ; 

 and the coloration was quite different from all the nymphs I had seen 

 before, so that at first I was inclined to believe I had taken another 

 species. The specimens were of a beautiful green color, on the fore 

 parts (prothorax and wing-pads) red. shading very slightly into 

 brown ; the basal portions of the legs, the pectus and mouthparts were 

 brown ; the tibins and abdominal prominences yellowish, suffused with 

 rose-red; the anal region and the venter darker passing into brown. 

 The first nymphs of this description were found July 26, on oak. 

 July I. the same form, only somewhat larger, was taken on walnut. 

 July 6, I could find no more specimens on oak but in addition to adult 

 insects (three males and one female) there were two nymphs. The 



