Breed. — Muscle Metamorphosis, 



PLATE 2. 



Fig. 5. Superficial layer of the metathoracic lateral dorso-ventral muscles of the 

 left side of a young pupa as they would appear with the lateral wall of 

 the metathorax removed. Anterior at the left. X G7.5. 



Fig. 6. Side view of the resting larva of Thymalus. X 13. 



