. Animal life as affected by the natural conditions of existence. Animal ecology. 144 THE INFLUENCE OF INANIMATE SUEROUNDINGS. migratory fish—the salmon, the eels, many herrings, piaioe, and others. More interesting, because less generally known, are the cases of marine Insects or insect larvse. 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; Audouin studied the habits of a beetle (Blemus fiwvescmis) which lives in the sea like the fresh-water spider, Argyroneta aquatica; Packard has given a li
. Animal life as affected by the natural conditions of existence. Animal ecology. 144 THE INFLUENCE OF INANIMATE SUEROUNDINGS. migratory fish—the salmon, the eels, many herrings, piaioe, and others. More interesting, because less generally known, are the cases of marine Insects or insect larvse. 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; Audouin studied the habits of a beetle (Blemus fiwvescmis) 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 vraters of North America, and he enumerates as be- longing to them not less than ten diiferent species of beetles, flies, and bugs. In the Pacific Ocean and Philippine Sea, I have myself often found various Insects and even Spiders in the \ Fig. 56.—ffalobates 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. 35) is particularly common id these seas, besides the above-mentioned larvse 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, Hydrometra, in great numbers and in every stage of development, on the high seas hundreds of miles jrom land. Among Mollusca a species of Unio lives in the Brisbane River within reach of the flood-tide. Dr. Carpenter found Planorhis glaher (Jefii'eys) at a depth of 1,415 fathoms at Cape Teneriffe. Neritinaviridis, 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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