376 



ZOOLOG Y. 



10 



Vi'g. 349, Metamorphosis of Sarcopsylla penetrans, 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 Fame 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 r; has entered the skin of its host ; 12, the mouth-parts, much 

 enlarged ; m, mandibles ; d, maxillary palpi ; it, under-lip or labium. After Kareteu 

 and Quyon. 



