Sept., igio.] MaTAUSCH : OBSERVATIONS ON MeMBRACID/E. 165 



2. Ceresa albescens v. D. 



July 9, I found a nymph resembling those of C. taiirina, of yel- 

 lowish-white fuzzy appearance, due to its being covered with thick 

 hair. I was strongly inclined to believe that I had to deal with a 

 (to me) new species of Ccrcsa, and therefore searched for other 

 specimens in the same spot on Viburnum, and on July 13 I suc- 

 ceeded in finding three others. July 15, the first nymph developed 

 to a splendid male, and I found one more of the nymphs. Then one 

 more male and two females developed. I had killed the remaining 

 nymph to make a drawing of it. 



The color of the newly matured insect is a splendid green, and 

 only by degrees does it change to the characteristic color associated 

 with this species. I had been unable to get any trace of fully devel- 

 oped insects, in spite of diligent search, till, on September 12, I 

 found a splendid female, south of Newark. 



3. Ceresa bubalus Fabr. 



This species was very plentiful; males from July 21 to August I. 

 On the latter date I collected the first female, and from that time on 

 till September 12, both sexes were found, on which date out of 8 

 specimens, however, only one was male. Till September 30, I col- 

 lected females only. 



4. Ceresa brevitylus v. D. 



Specimens of this species appeared at about the same time as the 

 first males of C. bubalus, and seemed to be rare. I found only 4 

 specimens in spite of diligent search. Of these one was male, and 

 two females. I could not determine the sex of the fourth specimen, 

 as it was damaged in collecting. The first female was collected July 

 19, the second July 21, and two other specimens July 22, of which the 

 one saved was a male. They resembled C. bubalus so closely that at 

 first I thought them merely sports of that species with dark brown 

 legs. 



5. Ceresa taurina Fitch. 



June 19 I collected the first nymph on a smooth species of Soli- 

 dago, and later two more. The first did not develop, the two others 

 however matured in 5 and 9 days respectively, into handsome males. 

 Nevertheless they died two days afterwards. The adult insects col- 



