. Sanitary entomology; the entomology of disease, hygiene and sanitation. e of Secy., circ. 61, fig. 13. Pale reddish-brown species with top of abdomen much darker and with five yellowish-white bands across the top (for a Culex see fig. 56), Culex quinquefasciatus. 3. A dark brown species with a vein near the base of the wing yellowish-white and this vein having three distinct dark spots, Anopheles crucians. 274 SANITARY ENTOMOLOGY A dark brown species wdth the wings mostly brown having alarge, yellowish-white spot on the front edge of wing towardsthe tip, and a smaller light spot close to the
. Sanitary entomology; the entomology of disease, hygiene and sanitation. e of Secy., circ. 61, fig. 13. Pale reddish-brown species with top of abdomen much darker and with five yellowish-white bands across the top (for a Culex see fig. 56), Culex quinquefasciatus. 3. A dark brown species with a vein near the base of the wing yellowish-white and this vein having three distinct dark spots, Anopheles crucians. 274 SANITARY ENTOMOLOGY A dark brown species wdth the wings mostly brown having alarge, yellowish-white spot on the front edge of wing towardsthe tip, and a smaller light spot close to the tip. Fringe atthe tip of wing dark, Anopheles punctipennis. A species very slightly smaller. Wings clear except along frontedge where there are three large, j^ellowish-white spots towardsthe tip. The third spot is at the tip and the fringe at the tip ofthe wing is yellowish-white. Anopheles pseudopunctipennis. A brown species with the wings without pale, conspicuous mark-ings. Wings with four dark-gj^y to black spots on outer half(fig. 58), ^Anopheles Fig. 58.—A malarial mosquito, Anopheles quadrimaculatus Male at left and femaleat right. Greativ enlarged. (Howard.) From U. S. Dept, Agr., Office of Secy.,Circ. 61, fig. 8. The yellow fever mosquito is more d^nitely marked than any otherspecies of mosquito known. The general color is a dark-brown. On topof the thorax or back there are two silvery-white, curved lines whichresemble an inverted lyre. REFERENCES Howard, L. O., Dyar, H. G., and Knab, F., 1912-1917.—The mosquitoesof North and Central America and the West Indies, 4 vols. This veryfine monograph is the largest and most complete on this subject. Dyar, H. G., and Knab, F., 1917.—The genus Culex in the United Inscitiae Menstruus. Vol. 5, Nos. 10-12. CHAPTER XIX Mosquito Control ^W. Dwight Pierce Probably more money and more concentrated effort has been devotedto mosquito control throughout the world than to the control of anyother d
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