. Animal life as affected by the natural conditions of existence. Animal ecology. 144 THE INFLTJENCE OF INANIMATE SnEEOUNDIHGS. migratory fish—the salmon, the eels, many herrings, p'aice, and others. More interesting, because less generally known, are the cases of marine Insects or insect larvre. Slabber has de- scribed the larva of a fly which lives in the sea, and I myself frequently met with a similar one in the Philippine and China seas; Audouinstudied the habits of a beetle {BiennisJlavescrms) which lives in the sea like the fresh-water spider, Argyroneta aquatica; Packard has given a lis
. Animal life as affected by the natural conditions of existence. Animal ecology. 144 THE INFLTJENCE OF INANIMATE SnEEOUNDIHGS. migratory fish—the salmon, the eels, many herrings, p'aice, and others. More interesting, because less generally known, are the cases of marine Insects or insect larvre. Slabber has de- scribed the larva of a fly which lives in the sea, and I myself frequently met with a similar one in the Philippine and China seas; Audouinstudied the habits of a beetle {BiennisJlavescrms) which lives in the sea like the fresh-water spider, Argyroneta aquatica; Packard has given a list of the insects which occur in the salt waters of North America, and he enumerates as be- longing to them not less than ten different species of beetles, flies, and bugs. In the Pacific Ocean and Philippine Sea, 1 have myself often found various Insects and even Spiders in the sea,. Fig. -Balobates sp,, caught by me far from land in the China Sea. sometimes swimming in great numbers on the surface, some- times creeping between rocks under water by the shore. A bug of the genus Halohates (fig. ) is particularly common id these seas, besides the above-mentioned larvte of flies. This genus was discovered by Eschscholtz, and now includes fourteen species living in seas the most remote from each other. The species in question runs about like our Water-Bug, llydrometra, in great numbers and in every stage of development, on the high seas hundreds of miles from land. Among IMollusca a species of TJnio lives in the Brisbane Piver within reach of the flood-tide. Dr. Carpenter found Planorhis gluhfr (Jeffreys) at a depth of 1,415 fathoms at Cape Teneiiffe. Neritina viridis, in the West. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Semper, C. (Carl), 1832-1893. New York, D. Appleton
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