356 



ZOOLOGY. 



10 



Fig. 341. Metamorphosis of Scavopsylla penetrattg, or jigger, which lives in the toe 

 of 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 <'ro\vn female magnified four times ; 10, head of the Kame still more enlarged ; 

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

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

 and Guyon. 



