356 



ZOOLOGY. 



B'ig, 341.— Metamorphosis of Sarcopsylla penetrans., or jigger, which. lii 

 of the natives of tropica! America. 1, egg; 2, embryo; 3, larva; 4, coco 



Uvea in the toe 

 , cocoon ; 5, pupa ; 

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

 of its human host ; 8, the pame 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 ; »», mandibles ; rf, maxillary palpi ; w, under-lip or labium.— After Karsteu 

 and Guyon. 



