188 



MANGE IlfSECT. 



moving from place to place. Both inaecta here represented are 

 of the female species. The male differs in many essentials from 

 the female. -%■ 17- 



This insect is very 

 minute in size : the 

 annexed figures are 

 magnified about 300 

 diameters. If viewed 

 with the microscope by 

 reflected light, it ap- 

 pears dark; but when 

 examined by condensed 

 light, it is seen to be 

 of a clear white colour. 

 It possesses eight legs, 

 two pairs of which are 

 placed before, and two 

 pairs behind. Attach- 

 ed to each of the four 

 legs in front, and to 

 two behind, is a sort 

 of jointed sucker. By 

 these the insect is en- 

 abled to fix itself firmly 

 to the skin. One pair 

 of legs situated poste- 

 teriorly are destitute 

 of suckers, but have 

 long projecting hairs instead. 



Prom the presence of these long hairs upon the limbs ; 

 from the peculiar structure and position of the limbs of the 

 animal; from the readioesa with which the insect can travel 





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