. How to know the butterflies; a manual of the butterflies of the eastern United States. Butterflies. GENERAL ACCOUNT OF BUTTERFLIES that of the hypothetical type. The more impor- tant modifications are the following : The costa forms the costal border of the wing, and does not appear as a distinct vein. This is the case with nearly all insects ; but in many pu- pae the costa is distinct, and it is only in the later Fig. 6.—Venation of the wings of Sthenopis. stages of the development of the wings that it coincides with the costal margin. In the hind wings, veins M4 and Cut unite for a
. How to know the butterflies; a manual of the butterflies of the eastern United States. Butterflies. GENERAL ACCOUNT OF BUTTERFLIES that of the hypothetical type. The more impor- tant modifications are the following : The costa forms the costal border of the wing, and does not appear as a distinct vein. This is the case with nearly all insects ; but in many pu- pae the costa is distinct, and it is only in the later Fig. 6.—Venation of the wings of Sthenopis. stages of the development of the wings that it coincides with the costal margin. In the hind wings, veins M4 and Cut unite for a short distance, and then separate ; in the fore winar these veins unite and remain united through- out the remainder of their length (Fig. 6, M4 -f- Cu,). ii. 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
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbutterf, bookyear1904
