THE WHITE COFFEE—LEAF MINER. 333 
thanks for his unbounded hospitality and kindness, my observa- 
tions extended through the greater part of the month of March. 
At Secretario I continued my observations until the latter part 
of June, aided by the sympathy and coöperation of the proprietor, 
Dr. Christovao Corréa e Castro, one of the most enlightened and 
progressive men whom I had the pleasure of ‘knowing in Brazil. 
The acknowledgment of my deep gratitude is due also to Col. 
Antonio Corréa e Castro for his tender care of me during a month 
when I was prostrated by severe Sickness. 
I have arranged my account of the insect under headings, for 
greater convenience to the future investigator, and have added an 
explanation of the less familiar words used, for the benefit of those 
who are not acquainted with the science of entomology. 
Food-plant, and Indications. of the presence of the Insect.— The 
poe (larva) lives in the leaves of the coffee-tree (Cofea 
food-plant, with a termination indicating the small size of the 
nye — The insect was called Elachista coffeella by Guérin- 
oo in his memoir (to which I shall often refer hereafter), 
iad. Se at the time when he described it, the genus Cemiostoma 
not been established, and the genus Elachista was still consid- 
ered of such extent as to include this species. 
