. How to know the butterflies; a manual of the butterflies of the eastern United States. Butterflies. HOW TO KNOW THE BUTTERFLIES two extend to the margin of the wing as a single vein, which for this reason is marked Sc-f-R,. It will also be seen that the radial sector extends to the margin of the wing as an unbranched vein, marked Rs. In some butter- flies a short spur extends from the subcosta near the humeral angle of the wing; such a spur is termed the humeral vein (Fig. 7, H). The thin spaces of thewings which are bounded by the veins are called cells. In descrip- tions of wings, es- peci
. How to know the butterflies; a manual of the butterflies of the eastern United States. Butterflies. HOW TO KNOW THE BUTTERFLIES two extend to the margin of the wing as a single vein, which for this reason is marked Sc-f-R,. It will also be seen that the radial sector extends to the margin of the wing as an unbranched vein, marked Rs. In some butter- flies a short spur extends from the subcosta near the humeral angle of the wing; such a spur is termed the humeral vein (Fig. 7, H). The thin spaces of thewings which are bounded by the veins are called cells. In descrip- tions of wings, es- pecially in indicat- ing the location of markings, it is often desirable to refer to one or more cells. It is necessary, there- fore, to have a nomenclature of the cells of the wing, as well as of the wing-veins. 14. Fig. 8. -Venation of the wings of 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. New York, D. Appleton
Size: 1211px × 2062px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectbutterf, bookyear1904
