Sting, [493];

and ovipositor, [534]

Stink-flies, [469]

Stink-glands, [31], [125], [210], [264], [335]

Stipes, [95]

Stoll on spectres, etc., [254]

Stomach, [114], [124], [125]

Stomato-gastric nerves, [120], [121]

Stomodaeum, [123], [151]

Stone-flies, [407]