458 W. WESCHE ON THE LIFE-HISTORY OF THE TACHINID FLY. 



Fig. 6. Jaws of the larva of Myiobia fenestrata, Mg., seen in the 



same manner as Fig. 3. 

 ,, 7. Jaws of the larva of Plagia trepida, Mg., seen in the 



same manner as Fig. 3. 

 ,, 8. Same as Fig. 5, but drawn from another larva, and 



giving a different view of the parts. 

 ,, 9. Larva of P. serriventris, drawn from a preparation of a 



specimen taken out of the fly, and cleared in potash ; 



lateral view, a, jaws with accessory structures at 



distal end ; s, spiracle ; b, short serrations on ventral 



side used in locomotion. 

 10. Jaws of larva of S'qohona geoiiculata, Deg., seen in the 



>> 



same manner as Fiar. 3. 



r- 



Note. — Figs. 2, 3, 4, 6, 7, and 10 are'drawn at about the same 

 scale. The size of the other figures has been regulated by 

 convenience. The actual size of the larva is # 95 mm. of *045 inch 



in length. 



Jov.rn. Qv.ekett Microscopical Clv.b, Ser. 2, Vol. A'., No. 65, November 1909. 



