. Annual report of the Regents. New York State Museum; Science. AQUATIC INSECTS IN THE ADIRONDACKS 429 Ephemera varia Eaton Plate 11, figures 3, 4 1861 Ephemera decora Hagen, Synopsis Neur. N. Am. p. 38 (decora was Walker's name for another species) 1875 Ephemera decora Hagen, Rep't U. S. geol. sur. 1873; p. 578 1885 Ephemera varia Eaton, Linn. soc. Lond. Trans. (2) 3:69-70, pi. 63, fig. 12h 1892 Ephemera decora Banks, Am. ent. soc. Trans. 19:345 (listed) This dainty New England species was common about Little Clear creek, associated with the preceding species, with which it agrees qu
. Annual report of the Regents. New York State Museum; Science. AQUATIC INSECTS IN THE ADIRONDACKS 429 Ephemera varia Eaton Plate 11, figures 3, 4 1861 Ephemera decora Hagen, Synopsis Neur. N. Am. p. 38 (decora was Walker's name for another species) 1875 Ephemera decora Hagen, Rep't U. S. geol. sur. 1873; p. 578 1885 Ephemera varia Eaton, Linn. soc. Lond. Trans. (2) 3:69-70, pi. 63, fig. 12h 1892 Ephemera decora Banks, Am. ent. soc. Trans. 19:345 (listed) This dainty New England species was common about Little Clear creek, associated with the preceding species, with which it agrees quite closely in habits. Imagos, while not sought outside our cages, were often seen sitting lightly on the bushes near the banks of the creek. The nymphs were abundant in the bed of the creek till the first of August. Nymph. PI n. fig. i, 2 Length of body 18 mm; setae 8 mm addi- tional; abdomen 11 mm; antennae mm. Color yellowish ; abdomen with a pair of submedian, longitudinal, brown streaks, laid on yellow ones, which they divide. !r^Antennae sparsely hairy, much surpassing tlie tips of the tarsi. Man- dibular tusks, approximate, slender, bare, gently up curved and divergent at the tips; femora and tibiae moderately dilated and bearing on their flattened edges copious fringes of hairs. Gills as in Hexagenia, but slenderer, and less deeply tinged with purple color. Order ODONATA Dragon flies The dragon flies are all aquatic. They frequent fresh water in all sorts of situations, and are probably the most important predatory aquatic insects. They are strictly carnivorous in all stages. The adults feed on a great variety of insects, and the larger dragon flies habitu- ally eat the smaller ones. The nymphs are very voracious, and in many species can- nibalistic, the larger nymphs eating the smaller ones; but they eat chiefly other aquatic insects, worms, crustaceans, fish fry, and tadpoles. The nymphs may be conveniently grouped Fig. e Face of nymph of sympet- rumiiiotum Hagen,
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