356 



ZOOLOGY. 



10 



Fig. 341. Metamorphosis of SarcopsyLla penelrans, or jigger, which lives in the toe 

 f the natives of tropical America. 1, egg; 2, embryo; 3, larva ; 4, cocoon; 5, pupa; 

 6, fecundated female ; 7, the same on the third day from its entrance under the skin 

 of its human host ; 8, the same after several days' residence in the skin of its host ; 

 9, fully grown female magnified four times' ; 10, head of the fame still more enlarged ; 

 11, the female before it has entered the skin of its host ; 12, the mouth-parts, much 

 enlarged ; m, mandibles ; d, maxillary palpi ; u, under-lip or labium. After Karsten 

 and Gnyon. 



