THE ERISTALIS TENAX. 



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creeps out of the door, and transforms in the earth. Twelve 

 days after the fly appears." 



The habits and metamorphoses of the insects inchided in the 



THE METAMORPHOSES OF THE RAT-TAILED FLY. (Eristalis tcnax.) 



genus Eristalis resemble those of Stratioviys. The larvje have the 

 same kind of tail-like appendage, which can be elongated when 

 required ; they live in shallow water, and move slowly on the 

 bottom by means of very small legs, which are attached to the 



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