Oct., '07] ENTOMOLOGICAL NEWS. 34! 



as broad as long. Operculum semicircular, slightly broader than long, 

 and reaching nearly half the length of the orfiice. 



Lingula spatulate, irregularly seven-lobed, rather coarsely papillose 

 for nearly its entire length. Pair of spines about 16 ]"- long at ex- 

 tremity, one each side of terminal lobe. 



Adult. Eyes strongly constricted, but not divided. Wings white, 

 immaculate ; body, head, legs and antennae pale yellow. Entire sur- 

 face of body and wings covered with a mealy secretion of wax. 



Female. Length of body about .86 mm. ; length of forewing about 

 1.34 mm. ; breadth of forewing- about .54 mm. ; length of hind tibia 

 about .38 mm. 



Male. Length of body about .76 mm. ; length of forewing about 

 1.05 mm.; breadth of forewing about .44 mm.; length of hind tibia 

 about .33 mm. 



Types. U. S. National Museum. 



Cotypes. Collection of Connecticut Agricultural Experi- 

 ment Station, New Haven, Conn. 



Described from 20 $ s, 9 $ s, and hundreds of pupa cases. 



Habitat. This species was very abundant on jewelweed, 

 Iinpatiens fulra, in West River meadows, New Haven, Conn., 

 in the seasons of 1904 and 1905, and a supply of material 

 was collected by the writer on September I7th, 1905. The 

 writer has also collected it on the same species of plant at 

 Sunnyside, Tarrytown, N. Y., August I5th, 1904; Poquonock, 

 Windsor, Conn., September I2th, 1904; New Canaan, Conn., 

 October 5th, 1904; and Woodbridge, Conn., July 28th, 1905. 

 Many leaves contained only one or two specimens, but in 

 other cases there were between forty and fifty individuals on 

 a single leaf. A single hymenopterous parasite was found in 

 one of the slide preparations, but the species has not been 

 identified. 



A. morrilli is allied to A. fcrnaldi Morrill, but differs from 

 that species in not having the dorsum of the pupa covered by 

 an amorphous waxy secretion characteristic of A. fcrnaldi. 



Named after Dr. A. W. Morrill, who has studied several 

 species of Aleyrodes. 



The writer here desires to acknowledge his indebtedness and 

 to express his thanks to Professor A. L. Quaintance, who has 

 kindly examined the specimens and the manuscript. 



