530 STUDIES IN LIFE-HISTORIES OF AUSTR.VLIAX DIPTERA BRACHYCERA, !. 



1916. Peterson, Alvah. — The head-capsule ami mouth parts of Diptera. 



Illinois Biol. Monog., iii.. 2. pp. 1-112. 

 1916. Dunn, L. H. — Ilermetia illucens breeding in a human cadaver. Eitt. 



News, Fhilad., ssvii., pp. 59-61. 



Explanation of Plates xxvii.-xxvin, 



Plate xxvii. 



Metamorphosis of IMetoponia rubriceps Macq. 



Fig. 1. Head of larva, dorsal view. X 45. 



Fig. 2. The same, ventral view. X 45. 



Fig. 3.' Pupa; early stage. Ventral view. X 14. 



Fig. 4- The same, lateral view. X 14. 



Fig. 5. Dorsal wall of larval case cut away to show the enclosed pupa. X 7. 



Pig. 6. Pupa; Fairly advanced stage. X 14. 



Fig. 7. Head of pupa, enveloped in pupal sheath. X 28. 



Fag. 8. Mouth parts of imago. X 28. 



Fig. 9. Posterior end of pupal sheath, removed from lar\-al case. ^ 9. 



Plate xxviii. 



Metopoaia rubriceps llacquart. 



Fig. 1. Bred specimen of male. Emerged .April. Natural size, 5.3 mm. long 

 from head to tip of tail. 



Fig. 2. Bred specimen of female, drawn two days after emergence, in Xovember. 

 Abdomen extended to much greater length than is found in most cap- 

 tured specimens. Natural size, 14 mm. long from head to tip of tail. 



Fig. 3. Abdomen of a captured female, dorsal view, showing the more usual 

 appearance. 



