2 The Naturalist in Nicaragua 
know there must be many oversights and omissions in re- 
ferring to what others have done; especially with regard to 
continental writers, for I know no language but my mother- 
tongue, and their works, excepting where I have had access 
to translations, have been sealed books to me. 
I am indebted to Mr. H. W. Bates for much assistance, 
and especially for undertaking the superintendence of these 
sheets in their passage through the press; to Mr. W. C. 
Hewitson, of Oatlands Park, I am under many obligations, 
for taking charge of my entomological collections, for naming 
many of my butterflies, and for access to his magnificent 
collection of Diurnal Lepidoptera. Mr. Osbert Salvin and 
Dr. P. L. Sclater have named for me my collection of birds; 
and for much entomological information I am indebted to 
Professor Westwood, Mr. F. Smith, and Dr. D. Sharp; 
whilst, in botany, Professor D. Oliver, of Kew, has kindly 
named for me some of the plants. Through the assistance 
of these eminent authorities, I trust that the scientific names 
scattered throughout the book may be depended upon as 
correct. 
Nryn1t Novcorop, 
October oth, 1873. 
