ILLUSTRATIONS. 
. The common house fly (Musca domestica): Puparium, adult, larva, and Page. 
Motalles Ws SLs eee, Sc OUR RY eae oe ee 5 
. The biting house fly (Stomoxys calcitrans): Adult, larva, puparium, and 
Pi re aaa Mab et cep ein: eke iam melee: _ 4° “eaiByii es ceaetoe nesenlBat pas. 
6 
. A stable fly (Muscina stabulans): Adult, larva, and details ...............- 7 
. One of the blue-bottle flies (Phormia terrenove): Adult........-..-------- 8 
8 
9 
The preen-botile ny (Laci éesdr): Nault... Sees. oe ee ee eee 
. The little house fly (Homalomyia brevis): Adults and larva..........-..---- 
. The fruit fly (Drosophila ampelophila): Adult, larva, puparium, and details... 10 
. The dung fly (Sepsis violacea): Adult, puparium, and details.............. Ly 
. The house centipede (Scutigera forceps): Adult...............2.222-222202 4 
459 
A 
