380 Annals Entomological Society of America [Vol. XIII, 



other. The pupal chambers are not confined to the edges of the leaves, 

 but are found to a much less extent in other parts. The leaves gradually 

 draw up, wither, and die from the effect of this. 



This insect was first observed by the writer at Gainesville on July 15. 

 On this date nearly every leaf of the sweet bay examined contained one 

 or more mines, and nearly all being in the pupal stage. Numbers of the 

 adults issued from July 17-21. There are a number of broods which 

 overlap each other. Fresh mines were abundant up until August 9 

 and from then on only a few fresh mines were observed. Several adults 

 issued from material November 2-3. The insect in all probability 

 passes the winter in the pupal stage in old leaves. 



Numbers of the chalcid parasites, Zagrammosoma muUilineata and 

 Sympiesis sp., were reared. 



The adults have been reared from mines on Magnolia grandifiora 

 and sweet bay. Magnolia glauca. Mines of what is probably the same 

 species have been observed in the red bay, Persea horhonia. 



Homaledra sabaella Chamb. The writer has found larvse of this 

 species working on saw-palmetto (Serenoa serrulata), and the palms 

 Phoenix canariensis and Washingtonia robusta. They can hardly be 

 said to be leaf-miners, as they feed upon the upper surface of the leaf, 

 destroying the skin as well as the fieshy part of the leaf. Their unsightly 

 work is particularly noticeable from January to March. 



An undetermined hymenopterous parasite was reared from a pupa 

 February 19. 



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