MYZUS PERSIOiE. 
179 
This insect is very variable as to colour, some to 
the naked eye appearing quite black, whilst others are 
brown or olive brown and black. 
Var. a. — Head, thorax, cornicles, antennae, femora, 
and tibial joints dark brown or shining black. Abdo- 
men green, with one, two, or three transverse dark 
marks, and a large squarish dark patch between the 
cornicles. Four deep black punctures on each lateral 
edge. Cornicles fine and cylindrical. Cauda black 
and pointed. The third joint of the antennsB tuber- 
culated. Legs greenish. Wings large. Insertions 
pale. Stigma grey. Eostrum reaches nearly to the 
third coxse. 
Var. /3. — More or less orange or red, with brown 
thoracic lobes and brown sternum, which last is deeply 
channeled. 
Winged male. 
Indies. Millimetres. 
Expanse of wings 0*270 6*85. 
Size of body 0*085x0*035 2*14x0*88. 
Length of antennae 0*090 2*27. 
„ cornicles 0*010 0*25. 
Bright citron yellow. Head, band on the pro- 
thorax, thoracic lobes, and many transverse dorsal 
streaks, fine brown. Frontal tubercles porrected. 
Third antennal joint tuberculate. Eyes fine red. 
Cornicles thin, slightly clavate and black. Tail small 
and black. Legs yellow, with brown tarsi and tibial 
joints. Wings moderately long. Veining as in the 
winged female. 
Taken on the nectarine, Amygdalus, October 29th, 
at Haslemere. 
By dissection under weak syrup, the male organs 
were very satisfactorily brought into view, the con- 
voluted testes and the singularly sickle-formed penis 
being well shown. 
Koch says that the male occurs in the early part of 
