. Annual report. 1st-12th, 1867-1878. Geology. 774 REPORT UNITED STATES GEOLOGICAL SURVEY. the liiud wings have two short, thread-like tails, the inner one the longest, and tipped with white; along the hind margin of these same wings is a row of little pale-blue spots, interrupted by a large orange-red crescent inclosing a small black spot; the wings beneath are slate-gray, with two wavy streaks of brown edged on one side with white, and on the hind wings an orange-colored spot near the hind angle, and a larger spot of the same color inclosing a black dot just before the tails. It expands one
. Annual report. 1st-12th, 1867-1878. Geology. 774 REPORT UNITED STATES GEOLOGICAL SURVEY. the liiud wings have two short, thread-like tails, the inner one the longest, and tipped with white; along the hind margin of these same wings is a row of little pale-blue spots, interrupted by a large orange-red crescent inclosing a small black spot; the wings beneath are slate-gray, with two wavy streaks of brown edged on one side with white, and on the hind wings an orange-colored spot near the hind angle, and a larger spot of the same color inclosing a black dot just before the tails. It expands one inch and one-tenth. (Harris.) It ranges, according to Scudder, from the Atlantic to the Pacific, and from the Canadian border to the Gulf of Mexico and southward to Ven- ezuela. Besides the hop, it feeds on Crataegus apiifolia, Rypericum auream, and Phaseolus. The Semicolon Butterfly, Pylygonia {Grapta) interrogationis (Fabr.).—A brov/n caterpillar with a red head aud pale-yellow or brownish spines, sometimes defoliating the vine, and changing into a large tawny-orange butterfly with jagged aud angular wings. Though the caterpillars of this common butterfly lives on the Ameri- can elm and lime trees, it is also at times quite destructive to the hop- vine, sometimes abounding " to such a degree as totallj^ to destroy the produce of the ;—(Harris.) The caterpillars are so conspicuous early in August that they can be easily plucked off with the hand. The chrysalides, which late in August suspend themselves beneath theleaves and to the stems of the vine, can be picked olf, though Harris recom- mends that the vine " should be cut down, stipped of the fruit that is sufficiently ripened, and then ; Caterpillar.—" Browish, variegated with pale yellow, or pale yellow variegated with brown, with a yellowish line on each side of the body; the head is rust-red, with two blackish branched-spines on the top; and the spines of the body are pale yell
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