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—_ 
SS OO OR ri 
Annals Entomological Society of America [Vol. XIV, 
EXPLANATION OF PLATES. 
(Unless otherwise stated, all Figures are of adult insects). 
PLATE II. 
Posterior view of right maxilla of Chauliognathus marginatus (Coleoptera). 
Posterior view of right maxilla of Corydalis cornutus (Neuroptera). 
Posterior view of right maxilla of Harpalus (Coleoptera). 
Posterior view of right maxilla of Necrophorus (Coleoptera). 
Posterior view of head of larval Silphid (Coleoptera). 
Posterior view of head of Gryllus (Orthoptera). 
Posterior view of head of Arixenia (Dermaptera). 
Posterior view of head of larval Pyrochroid (Coleoptera). 
Posterior view of head of larval Tenebrio (Coleoptera). 
Posterior view of head of Periplaneta orientalis (Blattida). 
PLATE III. 
Posterior view of head of Corydalis (Neuroptera). 
Posterior view of head of larval Raphidia (Neuroptera). 
Posterior view of head of alate Termopsis (Isoptera). 
Posterior view of head of larval Corydalis (Neuroptera). 
Posterior view of head of larval Corydalis (Neuroptera). 
Posterior view of head of Termopsis soldier (Isoptera). 
Posterior view of head of Harpalus (Coleoptera). 
Posterior view of head of Embia major (Embiidina). 
Posterior view of larval Panorpa (Mecoptera). 
PLASE IV. 
Posterior view of mouthparts of larval Limnephilid (Trichoptera). 
Posterior view of mouthparts of larval Psilotreta (Trichoptera). 
Posterior view of head of larval Elaterid (Coleoptera). 
Posterior view of mouthparts of larval Sialis (Neuroptera). 
Posterior view of mouthparts of larval Polycentropid (Trichoptera). 
Posterior view of mouthparts of larval Prionyxtus (Lepidoptera). 
Posterior view of mouthparts of larval Rhyacophila (Trichoptera). 
Posterior view of head of larval Hydrophilus (Coleoptera). 
Posterior view of right maxilla of larval Schizura concinna (Lepidoptera). 
Posterior view of head of larval Achroia grisella (Lepidoptera). 
Posterior view of mouthparts of larval Cimbex (Hymenoptera). 
Posterior view of mouthparts of larval Hepialus (Lepidoptera). 
PLATE V. 
Frontal view of head of larval Neurotoma (Hymenoptera). 
Frontal view of head of Raphidia (Neuroptera). 
Frontal view of head of Chauliodes (Neuroptera). 
Frontal view of head of Sialis (Neuroptera). 
Frontal view of head of Anisolabis maritima (Dermaptera). 
Frontal view of head of male Corydalis (Neuroptera). 
Dorsal view of head of larval Chalcophora (Coleoptera). 
Frontal view of head of alate Mastotermes darwinensis (Isoptera). 
Frontal view of head of larval Sialis (Neuroptera). 
Frontal view of head of larval Raphidia (Neuroptera). 
Frontal view of head of larval Corydalis (Neuroptera). 
