It is probably owing to the escape of the elastic vapours from these spiracula that the modern earthquakes are of such small extent compared with those of remote antiquity, of which the vestiges remain all over the globe.
Body not tripartite; spiracula or air-openings; more than three pairs of feet, no wings.
It includes the Spiracula Antepectoralia, Prosternum, Antefurca, and Brachia.
No one would say the lungs of a man were analogous to the lungs of a monkey, but any one might say that the gills of fish and the spiracula of insects are analogous to lungs.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "spiracula" in a variety of sentences. We hope that you will now be able to make sentences using this word.
