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Biology of Juniper Berry Insects 181 
PLATE XVI. 
Larva of R. juniperinus. 
Side view of cuadal tip of larva of R. juntperinus. 
End of larva of R. juniperinus. 
Head end of larva of R. juniperinus. 
Sensory papilla of R. juntperinus. 
Anterior spiracle of R. juniperinus. 
Tip of one of the lobes of the anterior spiracle of R. juniperinus (enlarged). 
Egg of R. juniperinus. 
' Head end of larva of R. juniperinus from beneath. 
Stigmal plate of R. juniperinus. 
Cephalo-pharyngeal skeleton of R. juniperinus. 
PLATE XVII. 
Larva of Argyresthia alternatella. Kearf. 
Mandible of larva of A. alternatella. 
Thoracic leg of larva of A. alternatella. 
Parasitized larva of A. alternatella, showing three mature pupa of the 
Encyrtid. 
Hooks on prolegs of 4. alternatella. 
Longitudinal section of a berry showing (a) Young larva of A. alternatella 
in the third layer of the ovule; (b) Egg of E. juniperinus in burrow 
of mites. 
Diagram showing the location of setz on the first abdominal segment of 
A. alternatella. 
PLATE XVIII. 
Labium of larva of A. alternatella. 
Mazxilla of larva of A. alternatella. 
Antenna of larva of A. alternatella. 
Pupa of A. alternatella. 
Longitudinal section of a mature deformed berry. 
(a) Larva of E. juniperinus. 
(b) Larva of G. junipert. 
(c) Decidomyid larva. 
(d) Mite. 
A young berry showing position of eggs of A. alternatella. 
Egg of A. alternatella. 
