1935 ] 
Immature Stages of Macrocera anglica 
33 
Summary 
1. The Biology and Morphology of Macrocera anglica is 
given. 
2. Luminosity, development of carnivorous habits and the 
excretion of oxalic acid by the larva are discussed. 
3. The change from the peripneustic to the apneustic con- 
dition in the larva of Macrocera is accounted for. 
Acknowledgement 
I wish to thank Prof. M. Khalil Bey, Director of the Re- 
search Institute, for his advice and helpful criticism. 
References 
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