GENUS NEOMASKELLIA. 91 



form; joints III to VII slender, numerously ringed; joints IV and 

 VI, and V and VII subequal in length; compound eyes reniform; 

 large ocellus almost touching the compound eye near its upper 

 margin. 



General color of body yellow; legs and antenna? paler; wings 

 white, unmarked; venation typical for Aleurochiton ; abdomen of 

 gravid females large, distended with equally developed eggs, as 

 many as 50 having been counted in one instance. 



The so-called paronychium (PI. XXXIII, fig 9) is blade-like, con- 

 siderably longer than claws, and fringed on lower edge with bail's. 

 In aceris this structure is spatulate and almost twice length of claws. 



Adult {mule). — A single specimen only of this sex is at kand; gen- 

 eral structure as in female; genitalia forcipate (PI. XXXIII, fig. 

 10), the valves rather short and stout, strongly curved at tip; penis 

 enlarged at base and strongly curved. 



Described from numerous pupa? on leaves, and pupa?, adult females, 

 and one male in balsam mounts. 



Genus ALEYRODES Latreille. 



Forewing with radial sector and cubitus retained and a very small 

 rudiment of the media rarely present (PI. I, fig. 11) ; antennae varia- 

 able, of seven segments, sometimes the third longest, sometimes the 

 seventh ; vertex rounded ; paronychium of moderate length and hairj' ; 

 claspei's of the male usually short and thick. Pupa case with no 

 compound pores, but with or without simple pores variously ar- 

 ranged; orifice variable, showing several different types. 



Type, proletella Linne. This genus is the original one and upon it 

 the famih^ was erected. At present a great variety of fonns are here 

 included which, when carefully studied, will no doubt, as previously 

 mentioned, necessitate the breaking up of the genus. 



Genus NEOMASKELLIA n. gen. 



Forewing with radial sector only present; antennae of seven seg- 

 ments, of which the third is the longest; claspers of the male short., 

 very hairy, and psyllid-like. Pupa case without compound wax pores 

 and apparently fcAv simple ones, but with numerous prominent spines; 

 vasiform orifice of pupa case short, broad, and included. 



Type, comata Maskell. 



This genus is erected to include a specie^'< with the most reduced 

 wing venation known in the family and with the claspers of male 

 somewhat more primitive than the usual type. It would appear to be 

 an early offshoot from the Aleurochiton branch. 

 61201°— 13 7 



