. A manual of zoology for the use of students : with a general introduction on the principles of zoology . Zoology. ANNULOSA: INSECTA. 265 The Diptera constitute one of the largest of the orders of the Insecta; the House-flies and Flesh-flies (Musca), Gnats '(Cu/ex), Forest-flies (Hippobosca), Crane-flies {TipuUda), and Gad-flies (Tabanidce), constituting good Fig. 92.—Diptera. Crane-fly. ( 7>^»/a ^i^rocni}. Order IX. Lepidoptera.—Mouth suctorial, consisting of a spiral trunk or " antlia," composed of the greatly-elongated maxillae, and protected, when not in use, by th
. A manual of zoology for the use of students : with a general introduction on the principles of zoology . Zoology. ANNULOSA: INSECTA. 265 The Diptera constitute one of the largest of the orders of the Insecta; the House-flies and Flesh-flies (Musca), Gnats '(Cu/ex), Forest-flies (Hippobosca), Crane-flies {TipuUda), and Gad-flies (Tabanidce), constituting good Fig. 92.—Diptera. Crane-fly. ( 7>^»/a ^i^rocni}. Order IX. Lepidoptera.—Mouth suctorial, consisting of a spiral trunk or " antlia," composed of the greatly-elongated maxillae, and protected, when not in use, by the cushion-shaped hairy labial palpi. Maxillae forming two sub-cylindrical tubes, united together by inosculating hooks, and constituting an in- termediate tube by their junction. Maxillary palpi minute; labrum and mandibles rudimentary. Head, thorax, and ab- domen more or less covered with hair. Wings, four in num- ber, covered with modified hairs or scales; wanting in the females of a few species. Nervures not very numerous, mostly longitudinal. Antennse almost always distinct, and composed of numerous minute joints. This well-known and most beautiful of all the orders of Insects comprises the Butterflies (fig. 93) and the Moths (fig. 94); the former being diurnal in their habits, the latter mostly crepuscular or nocturnal. The larvae of Lepidoptera (fig. 94), commonly called " cater- pillars," are vermiform in shape, normally composed of thirteen segments, the anterior portion forming g. distinct homy head,. 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 Nicholson, Henry Alleyne, 1844-1899. New York : D. Appleton
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