170 Journal New York Entomological Society. [Voi.xviii. 



21. Campylenchia curvata Fabr. 



June 13 I found a small number of nypmhs on Solidago. The first 

 adult developed on the twenty-fifth, after having moulted at least 

 twice. This seems clear, as it had apparently moulted at least once 

 before capture as I judged from the number of moulted skins. After 

 obtaining these specimens, I observed only nymphs singly and now and 

 then. The first adult insect (a male) was caught June 26. The next 

 day I obtained a male and female, and after that both sexes in vary- 

 ing numbers till August i, when the proportion of females had notice- 

 ably increased. September 19 I took two females near Newark, and 

 September 26 Mr. Bischoff obtained another at Irvington, N. J. 



22. Euchenopa binotata Say. 



July 3 the first specimens were taken. This species was, as a rule, 

 very scarce, only single specimens being taken, except on July 6, when 

 I found a Viburnum tree with a large number of both sexes and also 

 many nymph-moults. Among the specimens was one freshly matured 

 insect. After this the species was rarely found until September 19, 

 when I obtained my last specimen (a female) at Newark. In August 

 I received a number of insects, mostly females, of remarkable size 

 and shape, and some still living, from the Field Museum of Natural 

 History, Chicago, through the kindness of Dr. B. E. Dahlgren. With 

 them were some very fine specimens of twigs covered with eggs. 



23. Microcentrus caryae Fitch. 



I found only one specimen, a female and without horns, on 

 Juglans at Newark, September 19. Mr. Bischoff, however, has given 

 me six splendid specimens of this species collected by him at Lake- 

 hurst, N. J. Four of these were horned females and two were males. 

 The shape of the horns on the latter is so much like that in Ccn- 

 truchoidcs perdita Am. & Serv. that I am beginning to doubt whether 

 C. perdita and M. carycc may not be merely local variations. This, 

 however, cannot be exactly determined until more extensive studies 

 are made, under favorable conditions. Mr. R. P. Dow also collected 

 one male similar to the above at Pinelawn, L. I., in June of this year. 



Microcentrus carycc appears in a great variety of forms and size 

 according to my observations of last year. The first insects of that 

 genus which I received were collected by Mr. W. T. Davis and Mr. 

 E. A. Bischoff in Lakehurst, N. J. They were all females and had 



