. Catalogue of the described Lepidoptera of North America. Prepared for the Smithsonian Institution. Lepidoptera -- North America. The head is located in front of the thorax and separated from it, in most instances, by a very indistinct segment. On both sides are situated the large globular reticulated eyes, oculi, b ; between them and above is the vertex, c ; in front is the from, d ; and be- low at the end is the mouth, os. The orbits of the eyes, orbita, fig. 4, e, are often distinguished by color and the character of the scales. Between the vertex and from are the feelers, antennce, a, nea
. Catalogue of the described Lepidoptera of North America. Prepared for the Smithsonian Institution. Lepidoptera -- North America. The head is located in front of the thorax and separated from it, in most instances, by a very indistinct segment. On both sides are situated the large globular reticulated eyes, oculi, b ; between them and above is the vertex, c ; in front is the from, d ; and be- low at the end is the mouth, os. The orbits of the eyes, orbita, fig. 4, e, are often distinguished by color and the character of the scales. Between the vertex and from are the feelers, antennce, a, near the eyes, behind them at the orbita, or at a little distance from them in many species, are two small, round, smooth elevations, which are called simple eyes, ocelli, f. The parts of the mouth are but little developed in butterflies. The proboscis or tongue, lingua, g, is composed of the two lower jaws (maxillae) grown together as a double tube and usually sepa- rated only at the end, and which, for the most part, is corneous and spiral. It is seldom absent, or consists only of two slender, soft threads. Under the tongue are placed the two palpi, h, which are three jointed ; above these in many nocturnal moths there are in addition two palpuli, figs. 5 and 6, i. The palpi are of various Fig. 5 .d •-. i. 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 Morris, John G. (John Gottlieb), 1803-1895. Washington : Smithsonian Institution
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