Identifier: referencehandboo05buckuoft (find matches)
Title: A Reference handbook of the medical sciences embracing the entire range of scientific and practical medicine and allied science
Year: 1900 (1900s)
Authors: Buck, Albert H. (Albert Henry), 1842-1922
Subjects: Medicine -- Dictionaries
Publisher: New York W. Wood and company
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: MSN

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o be preserveil in dilute formalin or in alcohol.Further data may be found in any of the manualscited. Aiiophdcs ateigen (1818). Head with both flat and narrow curved scales, butmain!)covered with large upright forked scales; palpilong in both sexes, usually about the length of the pro-boscis, four-jointed in the female, three-jointed in themale, in which the last two joints are short and thick;constrictions at the base make tlie palpi possess appar-ently one or two extra joints in each sex. Antenn;e,fourteen-jointed, filiform, pilose in the female, fifteen-jointed and plumose in the male. Thorax sometimes nude on the dorsum, usually withnarrow curved or small spindle-shaped fiat scales. Ab-domen generally pilose, but sometimes with a few scales REFERENCE HANDBOOK OF THE MEDICAL SCIENCES. IVIo»»qtiitoos.iUosquitocN. and rarely with many. Wings covered with small scalesof normal form or inflated, witli the first submarginal celllonger and narrower than the second posterior cell; both
Text Appearing After Image:
Tin. 336i.—Anopheles macuUpennis Meig. Male at left, female at right. (After Howard, Bull United States Dep. Ag.) the second and third long veins rnn past the cross veinsinto the basal cells, a very marked characteristic. The etiological importance of this genus has been thor-oughly demonstrated in its transmission of malaria, and ithas also been shown to be instrumental in transmittingfiliariasis. As a genus it is widely distributed, with theexception of the higher latitudes. Nuttall has shownthat in England this distribution compares exactly withthe old limits of ague, but the genus also occurs in dis-tricts where no ague is known to have existed. It doesnot follow that because AnoplieUs are found, malaria ispresent; but wherever the latter occurs, the presenceof Anopheles in considerable numbers has been demon-strated. Anopheles is moreover accustomed to fly andto bite only after sunset, so that by keeping within well-screened houses after that hour malaria is avoided evenin the

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