Iris oratoria, [248]

Isogenus nubecula, [405], [406]

Isopteryx, [400]

Isosoma, [546]

Isotoma, [190]

Jamaica, [388]

Japygidae, [184]

Japyx, abdomen of, [109];

J. solifugus, [184], [196]

Jhering, Von, on Termites, [387]