38 Journal New York Entomological Society. [^'°1- xxiv, 



npt Notal pterale (notopterale). 



p Paranotum, or paranota. 



pba Posterior sclerite at base of wing (posterior basalare). 



poa ...Bridge behind wing (postalare), connecting tergal and pleural 



regions. 



pot Posterior tergal sclerite (postergite). 



pra Bridge in front of wing (prealare), connecting tergal and 



pleural regions. 



prt Anterior tergite (pretergite). 



psc Prescutum. 



psl Postscutellum. 



sa Subalar sclerite (subalare). 



san Sclerite at base of anal veins (basanale). 



si Scutellum. 



sur Suralar sclerite (suralare). 



tg Tegula, or parapteron. 



EXPLANATION OF PLATES. 



(All figures are somewhat diagrammatic.) 



Plate I. 



Fig. I. Dorsal view of typical Plecopterous mesonotum, showing articula- 

 tion of wing base. 



Fig. 2. Gill plate (lamella) of Rithogena (Ephemerid) nymph, based on 

 a figure by Woodworth, 1906. 



Fig. 3. Lateral view of head, prothorax and mesothorax of immature 

 Coptotermes, pronotum bearing wing-like organs described by Bugnion, 191 1, 

 on whose figures this is based. (Immature Termite.) 



Fig. 4. Gill plate of immature Heptagenia (Ephemerid). 



Fig. 5. Lateral view of upper portion of metathoracic pleuron and wing 

 base of a grasshopper (Rhomaleum). 



Fig. 6. Dorsal view of mesonotum of Corydalis, showing articulation of 

 wing. 



Fig. 7. Dorsal view of metanotum and wing base of Periplaneta. 



Plate II. 



Fig. 8. Dorsal view of head, thorax and part of abdomen of the fossil 

 insect, Stenodictya lobata, based on several drawings by Handlirsch, Brongniart 

 and others. The wings are represented as though partly cut off. 



Fig. 9. Dorsal view of an immature Mantid (Chwradodis), showing de- 

 veloping wings and prothoracic paranota. 



Fig. 10. Dorsal view of pronotum and basal portion of fore wings of a 

 Tingitid {Corythiica). 



Fig. II. Lateral view of segments 6 and 7 of the abdomen of the Phasmid 

 Ectatosoina popa. 



