Dec. 1917-] Dickerson-Weiss: Idiocerus scuRRA Germak, 219 



deltoid cs) especially Lombardy at the following places, Kingston, 

 Irvington, New Brunswick, Red Bank, Bound Brook, Springfield, 

 Ridgefield, Plainfield, Nutley and Rutherford and undoubtedly exists 

 in many other places. In Van Duzee's " Check List of the Hemiptera 

 of America, North of Mexico," its distribution is roughly given as 

 "eastern states to Mississippi Valley and eastern Canada." Leonard 

 and Crosby record it from Ithaca, N. Y., and Mr. Van Duzee states 

 that it was common on poplars at Buffalo, N. Y., in October, 191 2, and 

 that as far as he knows, it was first taken in this country in October, 

 1909, at New Haven, Conn., by B. H. Walden. 



Overwintering takes place in the egg stage, the eggs being found 

 as a rule in the twigs, just above and concealed by the buds. They 

 are covered only by a thin layer of bark, which becomes brown and 

 somewhat wrinkled. Upon removing a bud, the place of oviposition 

 is readily seen. On each side of the wrinkled, raised bark is a longi- 

 tudinal crack. The bark covering the eggs is so thin that in many 

 cases the contour of the eggs is discernible. Upon removing the thin 

 covering of bark, the eggs can be seen arranged in a row, with the 

 tips pointing upward and outward. Where five or six eggs were 

 found, the row was somewhat curved. Each long, whitish egg lies 

 flat against the adjoining one. Groups of three, four and five were 

 common with three predominating. In several cases from nine to 

 twelve were found in a single batch. Leonard and Crosby state that 

 they found the eggs in groups of five to ten, eight being a common 

 number. In some instances eggs were found irregularly laid in the 

 twig tissue between the buds and sometimes close to but not in the 

 tissue above the bud. At other times, eggs were found in leaf petioles 

 and in one case in the heavy midrib of the leaf. These exceptions 

 were more prevalent when many fenjales had oviposited in the same 

 twig. The eggs were always found in the last made growth of the 

 twig or what amounts to green wood when egg deposition is under 

 way. Every part of a young twig is utilized except the tip. Here the 

 buds are close together, the tissue is very tender and watery and evi- 

 dently unsuitable for egg deposition. In a severe infestation, from 

 48 to 50 eggs were found in each linear foot of twig. This is allow- 

 ing sixteen buds to the foot and three eggs above each bud. 



In the field hatching started about May 28 after a delay of at least 

 a week on account of cool, unfavorable weather. In the laboratory. 



