Exodus, locust of the book of, [298]

Exsertile blood-sacs, [132]

External parasite, [555]

External structure, [87];

diagram, [88];

of earwigs, [203] f.;

of cockroaches, [221];

of Mantidae, [242] f.;

of Phasmidae, [260] f.;

of Acridiidae, [280] f.;