March, 1912.] MaTAUSCH : LiFE HiSTORY OF EnCHENOPA BINOTATA. 63 



number of insects I found on October 15 was greatly reduced from 

 those of October 8, on which 6 specimens had been found; on the 15th 

 there were only 3. The insects, although it was the middle of the 

 day, seemed to be very weak since when I touched one, it hardly 

 moved; another I saw somewhat higher on the limb, just beginning to 

 move, at the same time a slight breeze sprang up, the insect fell to the 

 ground and being much of the soil color, I was unable to find it. 



While hunting for eggs of these species in the spring on the above- 

 mentioned bushes on Vibiii'nuvi I found markings on the twigs of 

 egg-covering, which seemed to be of the previous season. The slits 

 were partly open, somewhat exposing the eggs. On May 7, I took 

 one of the twigs home, hoping to be able to observe some of the 

 developing nymphs. For that purpose I kept the twig in water, but 

 as it began to wither, I started out on May 14 at 6 o'clock in the 

 morning in order to get another fresh twig. I found on several of 

 the egg-areas some yellow objects moving, but owing to their small 

 size was unable to make out their nature. But with the magnifying 

 glass at home I saw that they were the larvae making their escape 

 from the eggs and at one spot as shown strongly magnified in Fig. 7, 

 they came out six at a time. Two had partly emerged, the rest were 

 just commencing. By watching the spot carefully I found the last 

 one ready to emerge at 9 o'clock. Then looking over the twig first 

 collected, I found a number of developed nymphs. 



The larvae are of a light yellow, with crimson eyes, and some- 

 what more orange-red markings on the abdomen, covering laterally, 

 three segments from its base. In the larvK this color runs together, 

 nearly forming a ring, but in the nymph stages, where the abdomen 

 extends, and also in the adult stage, it forms two lateral red markings. 

 The larvae on first emerging are smooth, but when they come about 

 half way out, they commence to build up the first stage of the nymph. 

 The head first assumes its form, and the hairs on it, that had been 

 smooth, stififen out, as do also the body-rings one after another. The 

 legs become free, and then the abdomen takes on its shape, the latter 

 having in that stage the prominences very short with long hairs. All 

 the hairs are rather long in this stage, curved and directed back- 

 wards. Then the insect gets a hold on the twig and, freeing itself 

 entirely from the egg, after a short rest, walks up to the leaves, prob- 

 ably to feed near the base on the petiole. This seems to be their 



