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"The Giant Clam, <em>Tridacna gigas</em>, is the largest of known shell-fish, the two valves sometimes weighing five hundred pounds, and the animal from twenty to thirty pounds. It is found along the shores of the Polynesian and Asiatic Islands, where the flesh is eaten raw by the natives." &mdash; Goodrich, 1859

Shells of the great clam

"The Giant Clam, Tridacna gigas, is the largest of known shell-fish, the two valves sometimes…

"On the continent of Europe the <em>Sirex gigas</em> often appears in immense numbers, and does great damage in this way." &mdash; Goodrich, 1859

Sawfly

"On the continent of Europe the Sirex gigas often appears in immense numbers, and does great…