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CHAPTER VI. 
CATALOGUE OF INSECTS AND DIAGNOSIS 
OF SPECIES. 
Since this work has been in type, the author has received a letter from the 
State Inspector of Fruit Pests for California, in which the writer states that the 
insect Icerya Purchasi has there, especially in the southern part of the State, 
gained such hold on the orange-groves, in spite of the most strenuous efforts, 
that the people find it impossible to keep it down. Orange- and lemon-growers 
(and indeed other tree-growers) in New Zealand, especially in the North Island, 
should take note of this fact, and beware of ever letting this omnivorous and 
most destructive insect obtain any footing on their trees. A speedy burning of 
every tfected tree is the best remedy in this case. 
merous ; feet ending in a single claw; abdomen terminating in 
a spike which forms the sheath of the penis; eyes present in 
adult ; ocelli often large, sometimes exceeding three in number. 
The above characters sufficiently distinguish this family from 
the rest of the Homoptera. Probably the first marks for identi- 
fication of a specimen might be the monomerous tarsus and the 
single claw. ‘The latter is always to be made out, at least in the 
earlier stages of the female and in the adult male. 
GROUPS. 
Larve active, naked; adult females and 
pupz stationary, covered with separate shields 
or puparia, composed partly of secretion, partly 
of the earlier discarded pellicles; females apo- 
dous after larval stage; abdomen of females 
not exhibiting a median cleft or dorsal lobes Draspipin x. 
