. The butterfly book; a popular guide to a knowledge of the butterflies of North America. Butterflies -- North America. The Life-History and Anatomy of Moths of the legs. It will be well for the student to thoroughly famil- iarize himself with the location and names of the different parts indicated in this and the following tar. F IG. 11.—Legs of a M< ith 1. Fore Leg. 2. c. t. /• t. r. Coxa. Trochanter. Femur. Tibia. Tarsus. (From "Packard's Guide," j). 231.) Middle Leg. ;»• Hind Leg. 11. Unjifues. p. Pulvillus. Sp. I. Single anterior s])ur. sp. 2. Paii"ed medial
. The butterfly book; a popular guide to a knowledge of the butterflies of North America. Butterflies -- North America. The Life-History and Anatomy of Moths of the legs. It will be well for the student to thoroughly famil- iarize himself with the location and names of the different parts indicated in this and the following tar. F IG. 11.—Legs of a M< ith 1. Fore Leg. 2. c. t. /• t. r. Coxa. Trochanter. Femur. Tibia. Tarsus. (From "Packard's Guide," j). 231.) Middle Leg. ;»• Hind Leg. 11. Unjifues. p. Pulvillus. Sp. I. Single anterior s])ur. sp. 2. Paii"ed medial spurs. sp. 3. Two pairs of posterior spurs. The structure of the wings of moths is essentially like that of butterflies, and consists of a framework of hollow tubes which support a double membrane which bears upon its surfaces the scales, which overlap each other like the tiles upon the roof of a house. The tubes, which are known as veins, communicate with the respiratory system and are highly pneumatic. They are also connected with the circulatory system, and are furnished, at least through their basal portions, with nerves. The fore wing has normally twelve veins. The hind wing has also in primitive forms, as the Hepialidtv, twelve veins, but in the vast majority of cases this number has been reduced, and eight veins is the number which is found in the majority of cases in the hind wing. The accompanying figures, with their expla- nations, will suffice far better than any mere verbal explanation to explain the structure of the wings of moths. (See Figures 12 and 13.) The relative position of vein five in relation to the median oi' subcostal systems has been much utilized in recent years by Systematists in their classification of the various groups. 15. 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 work.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishergardencitynydouble
