Barber Point, Wanakena and Plains during ,Tune, July and August. The insect was found breeding (m. aster, Aster aeumilla (us, at Barber Point, during July and August, 1920.
Lopus decolor (Fallen).
Common. Barber Point, Conifer, and Plains during July and August.
Psallus n. sp.
Several specimens, taken at Wanakena, Plains and Barber Point (luring July and August, 1920.
Rhinocapsus vanduzeei Uhler.
Very common on rank vegetation along the trails at Barber Point, Wanakena and Plains during June, July and August.
Plagiognathus politus Uhler. • Barber Point, Plains and Wanakena during .July and August.
Plagiognathus annulutus Uhler.
Barber Point during Jnly and August, 1920.
Plagiognathus fuscosus Provancber.
On yellow birch. Barber Point, August, 1920.
Plagiognathus chrysanthemi (Wolff).
Several specimens. taken while sweeping weeds in the old bum near the Ranger School, Wanakena, July 1.5, 1920.
Plagiognathus fraternus Uhler.
Conifer, Barber Point and Wanakena during July and August, 1920.
Plagiognathus sp. 1.
Wanakena and P(1,:lal. Point, July, 1020.
Plagiognathus sp. II.
Wanakena and Barber Point, July and August.
Plagiognathus sp. 111.
AVanakena and Barber Point, July. Knight will discuss this species and the two forms above when lie publishes on the genus Plagiognathus.
Chlamydatus pulicarius (Fallen). Barber Point, August, 1919.
(iERRIDAE 6erris remigis Say.
Common, only apterous forms being seen or This insect lives in the coves of Cranberry, Lake, Oswegatehie River, and it often congregates in large number.; in pools or slow-moving parts of streams. It spends the winter in the Mai are stale.
Gerris marginatus Say.
Common. Taken on Cranherry Lake, Oswegatchie liver and Bean Pond. This species is a laciest I ine and fluvial ile insect. but seems to prefer quiet waters.
Gerris argenticollis Parshley.
Taken in the coves of Cranberry Lake with mei ni rrul us and Gerris buenoi Kirkaldv.
This is by far the most abundant species of the smaller forms of the genus living in the vicinity of Cranberry Lake. Its habits and haunts are quite similar to that of r. marginalys.
Gerris rufoscutellatus (Latveille).
Very common. Barber Point, Wanakeni, Plains, and Conifor. This insect hibernates over winter in the mature form and is among the first of the water-striders to appear in early spring. The eggs are deposited just beneath the surface film of the water upon floating leaves of aquatic plants, small sticks and other objects in the water. They hatch in about ten days or two weeks. In an aquarium the first adults appeared thirty-four clays from the time of hatching, hut most of the specimens required several days longer to reach the adult state. Like the other members of the genus rufoscutellatus is predaceous and feeds upon small insects, and insects that happen to fall in the water and are drowned. Field observations indicate two generations a year in the Adirondacks.
Metrobates hesperius Uhler.
Very eommon on Cranberry Lake miff the Oswegatehie River. Only the apterous form was observed. Tt is usually taken in com pany with the two following species, Trepobates pictus (Herrich-Schteffer).
This species and Rheuniatobates racy( congregate by the thou sands upon Cranberry Lake and Oswegatehie River. It is very variable in color and size, and occurs almost entirely in the apte rous form. One &Mated specimen is at hand.
Rheumatobates rileyi Bergroth.
This insect is represented by many color variations, but there does not seem to be any distinct color variety.