48 ENTOMOLOGICAL SOCIETY 



having molted, though no cast skin could be found. It is quite pos 

 sible that the insect eats the cast skins of the earlier molts as is done 

 in the case of some other Locustidse, Microcentrtim for example. 



This spring another attempt was made to rear this species from 

 the egg, but I had to leave for British Columbia and failure re 

 sulted. It is to be regretted that the life cycle of this interesting 

 insect could not have been completed, but, since so much is 

 known, it is to be hoped that the near future will see the com 

 pletion of the life history. Later in life its food habits doubt 

 lessly change, probably becoming essentially vegetarian. Though 

 no adults were secured from these experiments there is practically 

 no doubt of the determination, the generic characters being plainly 

 indicated in the nymph and there being but this one species known 

 from the United States. 



Under the name Camptonotus scudderi this insect is said by- 

 Prof. Uhler* to occur on oak trees about Baltimore in the larval 

 state as early as the first of August, and as adults from the latter 

 part of September until sometime in October. Mature specimens 

 were taken by Mr. Barber on Plummer's Island, Md., on September 

 10, 1902. 



While the nymph of this species has been mentioned by sev 

 eral writers, no reference to its feeding habits has been published 

 so far as I can learn. Riley, in a popular account of the insect 

 on page 186, volume II, of the Standard Natural History, says 

 it hides in a rolled leaf during the day with its long antennae 

 wrapped several times around the body. It is possible that it is 

 only during the younger stages that it forms these rolls. The 

 young nymphs are very active and run about rapidly. They 

 seldom jump except when disturbed, though capable of leaping 

 a considerable distance. 



The egg and first stage nymph of this species may be described 

 as follows : 



Egg. Size, 1.25 mm. wide by 4.25 mm. long. Shape round, obtusely 

 pointed at each end; the surface, when seen through a lens, has a regu 

 larly beaded appearance. The color of the egg after the insect has issued 

 is pallid with the extremities infuscated, but before hatching they may be 

 colored, probably greenish. The young insect issues through a small 

 trap cut in one end. This door is made by a longitudinal split on one 

 side, which at the lower end intersects at right angles a transverse frac 

 ture which extends a fourth of the distance around the egg at about one 

 millimeter from the end. 



ist stage nymph. Head long and typically locustian. Eyes oblong, 

 dark brown in color; palpi pale, white at the tips; apical segment of the 



* Proc Ent. Soc. Philadelphia, n, p 549, 1864. 



