GENUS NEOMASKELLIA. «.) 1 
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 antennae 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 (PL XXXIII, fig 9) is blade-like, con- 
siderably longer than claws, and fringed on lower edge with hairs. 
In aceris this structure is spatulate and almost twice length of claws. 
Adult {mole). — A single specimen only of this sex is at hand ; 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 pupae 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) ; antennas varia- 
able, of seven segments, sometimes the third longest, sometimes the 
seventh ; vertex rounded ; paronychium, of moderate length and hairy ; 
claspers 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 family was erected. At present a great variety of forms 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; antenna? 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 few 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 species 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 
