105 
Tue Imaco.—The mature ‘insect which is represented enlarged in this model is 
elongate, blackish, and with numerous hairs, or pubescence. Its length is about 
three-twentieths of an inch. The outer wings are whitish, with a strong distinctive 
black spot. 
THE SAN JOSE SCALE. 
Aspidiotus perniciosus Comst. 
Ten enlarged models are exhibited illustrating the hfe cycle of this pest, which 
has caused more damage to the fruit industry and been the object of more legislation 
than any other insect. Its small size and inconspicuous appearance often leave it 
undetected until the infested trees are beyond recovery. The scale may be killed 
by fumigation or spraying. 
Enlarged models are exhibited of the first and second larval stages, of the young 
crawling larva, nearly full-grown larva, male pro-pupa, male pupa, adult male, adult 
female, and of the half-grown scale, full-grown male scale, and full-grown female scale. 
THE ASIATIC LADYBIRD. 
Chilocorus similis Rossi. 
Two enlarged models are exhibited illustrating the adult and the larva of this 
insect, which was introduced by the U. 8. Department of Agriculture from China, 
where it is the important agent in keeping the San José scale in check. 
THE CODLING MOTH. 
Carpocapsa pomonella Linn.- 
Four enlarged models illustrating the life history of this insect, which is the cause 
of the ‘‘wormy apples.’”’ The damage from it in this country is estimated at 
$11,000,000 annually. 
Models are exhibited of the larva and of the adult moth; and also an enlarged sec- 
tion of a piece of bark, cut so as to show a cocoon and pupa of the codling moth 
beneath it, and an enlarged section of ‘‘wormy’’ apple showing egg, young and 
mature larva and their work. 
2 THE MEXICAN COTTON BOLL WEEVIL. 
Anthonomus grandis Boh. 
Enlarged model. This insect is a native of Cuba and Mexico; upwards of ten 
years ago the weevils crossed the Rio Grande near Brownsville and have now spread 
over nearly the entire cotton belt of Texas and into the western parishes of Loui- 
siana. Its rapid extension, great destructiveness, and the unusual difficulties in the 
way of its control have caused grave fears for the future of the cotton industry in the 
United States. The lederal Government last year appropriated $250 000 for com- 
bating this insect. 
THE HONEY BEE. 
Apis mellifera Linn. 
Enlarged models, showing the insect in six different forms—queen, male, wax- 
worker, worker, bee with propolis, and the bee with pollen. In these are shown 
the external and internal characters which distinguish each type. Also a model of 
a comb in the same proportion, in which are seen the cells for honey, for pollen, 
and for the eggs to produce queens, drones, and workers, with eggs, larvee, and pups 
in different stages of development. (After Auzoux. ) 
FLUTED SCALE. 
Icerya purchasi Mask. 
Model in wax of a twig of orange infested with the fluted scale (Icerya purchasi) 
copied directly from nature, the actual scales being transferred to the model plant. 
Illustrates the characteristic appearance of the infested plant. 
Mopet or NoNINFESTED ORANGE.—The model in wax contrasts with the one repre- 
senting the characteristic appearance of infested plant. 
Illustrations from the publications of the Division of Entomology, representing the 
different stages of the fluted scale and its principal enemies. 
