First lesson in zoology : adapted for use in schools . Fig. 129.—Sectinii of butterflys tongue, the two maxiitse uniting to form thefood-passage c; <r, trachea; n, nerves; m, muscles of one side. (Magnified125 times.) Archippus butterfly. This represents a front view of thehead: cl is the front or visor, and Ih indicates the upperlip; tk is the tongue, cut off to show the tube in the mid-dle. An idea how it works can be seen by looking at BUTTERFLY ANB OTHER 8GALT-WINQBD INSECTS. 119 Fig. 139, which represents a cross-view of that of the Da-nais butterfly. The maxillae in some moths, such a
First lesson in zoology : adapted for use in schools . Fig. 129.—Sectinii of butterflys tongue, the two maxiitse uniting to form thefood-passage c; <r, trachea; n, nerves; m, muscles of one side. (Magnified125 times.) Archippus butterfly. This represents a front view of thehead: cl is the front or visor, and Ih indicates the upperlip; tk is the tongue, cut off to show the tube in the mid-dle. An idea how it works can be seen by looking at BUTTERFLY ANB OTHER 8GALT-WINQBD INSECTS. 119 Fig. 139, which represents a cross-view of that of the Da-nais butterfly. The maxillae in some moths, such as thegreat, green, tailed Luna moth, are short and separate, likea pair of blades. Now the tongue of the butterfly is formedby the union of these two blade-like maxillae; and they areso closely united together as to form a hollow tube (c),through which the nectar is sucked, so that it passes into. Fig. 130.—Fore and hind wii^ of a butterfly, showing the venation, o, costalvein; 6, subcostal; 6*. Ifl, o^, 6*, b^, tlie five subcostal veinlets; c, the vein (it is sometimes a branch of the subcostal and sometimes of themedian vein); d, median vein; d, d, d, d*, the four median veinlets; e, sub-median vein; /, internal vein; ft, interno-median veinlet. rarely found; bandd are situated in the discal cell. Lettering the same in both wings. the mouth. Each side of the tongue contains a nerre,muscles and an-air-tube {tr). The wings of butterflies are beautifully painted and or-namented. If, howerer, we examine the scales separatelyunder the microscope, we shall see that they are variety of color on the different spots and bands isdue to the arrangement of the scales, , to the interfer-ence of the rays of light passing through them. 120 FIRST LESSONS IN ZOOLOGY. In the butterfly, as in the house-fly, it will be seen thatthe front edge of the fore-wings is
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
