IO4 PROC. ENT. SOC. WASH., VOL. 22, NO. 5, MAY, 1920 



PALAEODICTYOPTEROID SUPERORDER 



(Panplectoptera ) . . Protephemerida, Ephemerida, Protodon- 



ata, Odonata, Palaeodictyoptera (in 

 part), etc. 

 PLECOPTEROID SUPERORDER ( Pan- 



plecoptera.. . Haplopteroida, Plecoptera, Hadentom- 



oida, Embiidina, Dermaptera, Coleo- 

 ptera, etc. 

 ORTHOPTEROID SUPERORDER (Pan- 



orthoptera) Protorthoptera, Grylloblattida, Phas- 



mida, Orthoptera (sensu str.) etc. 

 ISOPTEROID SUPERORDER < Paniso- 



ptera) . Protoblattida Zoraptera, Isoptera, Blatt- 



ida, Mantida, etc. 

 PSOCOID SUPERORDER (Panhomo- 



ptera. . . Psocida, Mallophaga. Anopleura (Pedi- 



culidaj Homoptera Hemiptera, Thys- 

 anoptera, Strepsiptera, etc. 

 NEUROPTEROID SUPERORDER ( Pan- 



neuroptera) Neuroptera, Hymenoptera, Mecoptera, 



Protomecoptera, Par a mecop t e'ra, 

 Paratrichoptera Trichoptera, Lepido- 

 ptera, Diptera. Siphonaptera, etc. 



ABBREVIATIONS. 



The subscripts ]( o, and 3 , indicate that the structure in question 

 belongs to the prothorax, mesothorax, or the metathorax, respec- 

 tively. The numerals on the segments denote the number of the 

 abdominal segment, the letters "t" or "s" being added above, to 

 indicate the tergites and sternites of the segments. 



a Epimeron. ha Hypandrium, or plate below 



ant Antenna (abbreviated). male genitalia. 



I) Lateropleurite, or lateral plate rig Hypogynium, or plate below fe- 



of pleural region. male genitalia. 



c Episternum. hp Hypoproct, or subanal plate, 



ca Coxa. Ic Lateral cervical plate, 



cu Cercus. Ip Labial palpi, 



d Notoporcessus, or tergal process mp Maxillary palpi. 



of male. n Notocornus, or procurved notal 

 dc Dorsal cervical plate. horn of male. 



e Laterosternite, or lateral plate () Trochantinus. 



of sternum. oc Ocelli, 



ep Epiproct, or supraanal plate. p Postscutellum. 



f Femur. pa Prealare, or prealar bridge, 



fm Frontomaculae. or frontal areas pn Pronotum. 



near eyes. ps Presctitum. 



