SECONt) SERIES: PEMPHIGUS TESSELLATA FITCH. 1'? 



heads directed toward the center, each specimen being ornamented 

 with six rows of shaggy or threadlike secretion. 



October 15^ 1906. — xVfter examining thousands of alders near the 

 Chain Bridge, District of Columbia, only three colonies were discov- 

 ered, composed of apterous females and their larva? situated near 

 the surface of the ground on the stems, each of which was completely 

 covered with a tube of mud constructed by the small ant Tapinoma 

 sessile Say. I saw, however, on the trunks of large maples, thousands 

 of dead return migi-ants and the sexual generation belonging to them. 



November 26, 1907. — Observed again near the Chain Bridge num- 

 bers of hibernating larva? between the dead and decaying leaves which 

 had accumulated around the base of a small shrub. All of them were 

 quite lively, though not feeding. They were very dark greenish or 

 almost black, covered with a mealy secretion, and provided with a 

 cotton-like brush at the anal end of the body. 



March 11.J 1908. — Numbers of hibernating larva? were found near 

 Somerset, Md., which had gathered around the base of the shrubs, 

 though still covered with fallen leaves, while smaller colonies had 

 already settled from 1 to 4 feet above the ground, arranged in circles 

 of 5 to 10 specimens. All were covered with a bluish- white secretion 

 and had 4 dorsal rows of small dense and rounded white knobs and 

 a fringe of woolly secretion along the sides and around the anal end 

 of the body. 



May 1^5 1908. — Found again near Somerset one small colony, about 

 2 feet above the ground, composed of mature apterous females of the 

 hibernating series, besides numbers of young larvae deposited by them 

 which had settled near by while others were still crawling about. 

 These 3'oung larva; form the third generation of descendants from 

 migrants of the previous spring. 



June 12, 1908. — Numbers of colonies of the hibernating series, each 

 colony being about one-half an inch in length, were seen at Great 

 Falls, Va., on small shrubs. They were about 10 inches above the 

 ground, whereas those on taller trees had located 10 to 25 feet above 

 the ground. All of them were already in the third stage, were closely 

 packed, and covered with a fuzzy secretion. Migrants from maples 

 Avere not present. 



September ^4, 1908. — Numerous colonies of this species were again 

 observed on alders near Somerset, Md. Some of the colonies were 

 more than 6 inches in length and were stationed from near the ground 

 to 2 feet above. The}' were composed of apterous females, numerous 

 larva? of the hibernating series, pupae, and some return migrants, 

 while at the same time a considerable number of these return migrants 

 and many of the sexual generation were found on the trunks of 

 maples along a street near by. 



