PLATE XXX. 



[Bnlargcd.] 



Fig. I. Muscina stabulans : a, full-grown larva ; b, head of same from below ; 

 c, same from side ; d, thoracic spiracles ; e, anal spiracles ; J", adult fe- 

 male ; g, head of male from front ; h, mouth parts of adult ; i, an- 

 tennse. (From Annual Report U. S. Department of Agriculture, 1892.) 

 2. Piophila casei : a, full-grown larva ; b, puparium ; c, pupa ; d, adult 

 with wings expanded ; e, same with wings closed in resting position. 

 (Author's illustration.) 



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