metamorphoses OF THE cuckoo spit. ( Aphrophora spumaria .) 
female Aphidce , all with wings, fly about in great quantities in 
the autumn season. A little care will prove that the eggs are 
laid at this time on plants, and that they are covered up with 
a sort of mucus which the female places over them to protect 
THE APHROPHORA SPUMARIA. 379 
naturalists and physiologists of the world. It was evident to 
all, and in fact everybody can observe it, that perfect male and 
