Do be careful! Turn very slowly." He pivoted; the slim moth darted past, circled, and hung before a blossom, wings vibrating so fast that the creature was merely a gray blur in the lantern light.

The next instant Gray's net swung; a furious fluttering came from the green silk folds; Kathleen whipped off the cover of the jar, and Duane deftly imprisoned the moth.
"Upon my word," he said shakily, "I believe I've got a Tersa Sphinx!--a sub-tropical fellow whose presence here is mere accident!" "Oh, if you have!" she breathed softly.

She didn't know what a Tersa Sphinx might be, but if its capture gave him pleasure, that was all she cared for in the world.
"It _is_ a Tersa!" he almost shouted.

"By George! it's a wonder." Radiant, she bent eagerly above the jar where the strange, slender, gray-and-brown hawk-moth lay dying.

Its recoiling proboscis and its slim, fawn-coloured legs quivered.