_Sub-Order 1.--Planipennia._
Family 1. Myrmeleontidæ or Ant Lions.
Family 2. Hemerobiidæ or Lacewing Flies.
Family 3. Mantispidæ or Mantis Flies.
Family 4. Sialidæ or Sialis Flies.
Family 5. Raphiidæ or Snake Flies.
Family 6. Panorpidæ or Scorpion Flies.
_Sub-Order 2.--Trichoptera_ (or Caddis Flies).
Family 1. Inæquipalpia or Large Caddis Flies.
Sub-family 1. Phryganeidæ.
Sub-family 2. Limnophilidæ.
Sub-family 3. Sericostomidæ.
Family 2. Æquipalpia or Little Caddis Flies.
Sub-family 1. Leptoceridæ.
Sub-family 2. Hydropsychidæ.
Sub-family 3. Rhyacophilidæ.
Sub-family 4. Hydroptilidæ.
_Sub-Order 3.--Pseudo-Neuroptera._
TRIBE I.--ORNOPTERA (or Dragon Flies).
Family 1. Libellulinæ or Great Dragon Flies.
Sub-family 1. Libellulidæ or Libellulines.
Sub-family 2. Cordulidæ or Cordulines.
Sub-family 3. Æschnidæ or Æschnines.
Sub-family 4. Gomphidæ or Gomphines.
Family 2. Agroninæ or Slender Dragon Flies.
Sub-family 1. Agronidæ or Agronines.
Sub-family 2. Calopterygidæ or Calopterygines.