. Annual report. 1st-12th, 1867-1878. Geology. 758 EEPORT UNITED STATES GEOLOGICAL SUEVEY. 4. and nibble the ferns and make considerable havoc among the plants before its presence is suspected. On July 16 I found one in a thin silken semi-transparent cocoon at- tached to a leaf of Lathyrus maritimus ; the cocoon was large and fall, being nearly half an inch long, cylindrical, both ends being rounded alike. Description.—This insect (Fig. 29, enlarged) is pitchy brown, and covered with microscopic, pale scales, resembling a scallop- shell, being marked with a few prominent ribs. Indeed, many of
. Annual report. 1st-12th, 1867-1878. Geology. 758 EEPORT UNITED STATES GEOLOGICAL SUEVEY. 4. and nibble the ferns and make considerable havoc among the plants before its presence is suspected. On July 16 I found one in a thin silken semi-transparent cocoon at- tached to a leaf of Lathyrus maritimus ; the cocoon was large and fall, being nearly half an inch long, cylindrical, both ends being rounded alike. Description.—This insect (Fig. 29, enlarged) is pitchy brown, and covered with microscopic, pale scales, resembling a scallop- shell, being marked with a few prominent ribs. Indeed, many of the weevils seem to be provided with scales like those of butterflies, Poduras, and a few other insects. The beak, so short and slender in the radish-weevil, is here broad and short, square at the end, from which the elbowed reddish-brown antennas arise. The head is a little darker than the rest of the body, and is coarsely punctured. The prothoras is coarsely gran- ulated, the granulations being arranged in irregular rows. The wing-covers are adorned with about eleven high, rounded, longi- tudinal ridges on each cover, and with coarse punctures along the furrows between them. There are also about twenty rows of pale dots along the wing-covers, consisting of scales. The legs, includ- . ing the claws, are rather paler than the rest of the body. The body Fig. 29. Pitchy- jg ajgo covered with scattered pale hairs bent down on the surface. Legged Weevil, especially on the top of the head; these hairs remain after the enlarged. scales are rubbed off. It is a quarter of an inch in length. Wire-Worms and Cut-Worms.—Larvae of various snapping-beetles^ Elater^ Agrotis, etc.—Although these insects have been fully described among those preying on wheat, corn, and grass, they are very destruc- tive to young cabbages and allied garden-plants. Wire-worms feed on the roots, and sometimes destroy the whole crop in Kentucky. In En- gland wire-worms are destroyed for many successive years
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