. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. Fig. Female of Anophel^ punctipennis; Agr. Expt. Sta). same plane with thebody, and the body itseif is usually placed at an angle with the wall, and especially whenresting upon a horizontal wall, such as the ceiling of the room, thebody of the Anopheles is at a very great angle with the surface. Wehave in this country three species of the malarial genus Anopheles,namely. Anopheles maculipeiuiis, Anopheles punctipennis, and Anophelescrucians; the two former are
. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. Fig. Female of Anophel^ punctipennis; Agr. Expt. Sta). same plane with thebody, and the body itseif is usually placed at an angle with the wall, and especially whenresting upon a horizontal wall, such as the ceiling of the room, thebody of the Anopheles is at a very great angle with the surface. Wehave in this country three species of the malarial genus Anopheles,namely. Anopheles maculipeiuiis, Anopheles punctipennis, and Anophelescrucians; the two former are found nearly all over the country, but the INSECTS AS DISTRIBUTERS OF HUMAN DISEASES. 109. Fig. 3. At left, head of male Culex; at right, head of femaleCulex. (Miss. Agr. Expt. Sta.) last is a more Southern species, although it has been found as far northas the south shore of Long Island. As to the early stages, the eggs ofAnopheles may at once be distinguished from the eggs of Culex, those ofCulex being laid in a raft-shaped mass on end and those of Anophelesbeing laid singly upon the surface of the water, always lying upon theirsides. The larvae of Culex, commonly known as wigglers, are familiarto almost every one, and are the common wigglers found in horse-troughsand rain-water bar-rels, which wigglearound in the water,returning at inter-vals to the surfaceto breathe, and whenat the surface hang-ing with simply thetip of the tail extrud-ing, the rest of thebody being held be-low the surface at agreat angle. Whatwe have called the tail is simply the breathing tube, which, with thecommon Culex wigglers, is long and more or less pointed. With themalarial mosquitoes, however
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Keywords: ., bookauthorcaliforn, bookcentury1800, bookdecade1850, bookyear1853
