. Economic entomology. Beneficial insects; Insect pests; Thysanura. 394 ANOPLURA. CASE on account of his being black instead of white, neither should we believe that the Pediculus of the Negro is different from that of the European because it is black instead of white. If we cannot believe that the Australian is different from the Esquimaux because he has proportionally a much longer leg, neither can we believe that the Australian Pediculus is different from the Slave Lake Pediculus, because it has a longer and straighter penulti- mate joint to its tarsus. If the curved tibia of the African do
. Economic entomology. Beneficial insects; Insect pests; Thysanura. 394 ANOPLURA. CASE on account of his being black instead of white, neither should we believe that the Pediculus of the Negro is different from that of the European because it is black instead of white. If we cannot believe that the Australian is different from the Esquimaux because he has proportionally a much longer leg, neither can we believe that the Australian Pediculus is different from the Slave Lake Pediculus, because it has a longer and straighter penulti- mate joint to its tarsus. If the curved tibia of the African does not constitute him a different species from races with straight tibias, neither should the greater or less curvature of the joints of the tarsi in the Pediculi be considered to form specific dis- tinctions in them. It so happens, that not only are the differ- ences, both between man and man, and Pediculus and Pediculus^ very similar in degree, but they are also differences of the same kind. They are differences in colour and proportion of the very same, or, at all events, analogous parts in both. To attempt to draw any deductions from these differences in the Pediculi, would^ therefore, be something like begging the whole question. Nos. Pediculus vestimenti (body louse).—3, Specimens from Britain; 4. En- ^~ • larged figure of ditto ; 5. Specimen on glass slide ; 6. Enlarged figure of anterior I (;' S I Pediculus vestimenti. li to i|] line in lenfi:tU. Sucker of ditto. This is distinct from the head-louse, but it is not easy to give. 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 Murray, Andrew, 1812-1878. [London] Chapman and Hall
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