AS A RECORD OF LONG AND INTIMATE FRIENDSHIP, 



AND AS A TRIBCTE OF HEARTFELT GRATITUDE AND REGRET, 



I DEDICATE THIS 



SUPPLEMENT 



TO MY 



'TRICHOPTERYGIA ILLUSTRATA 



TO THE MEMORY OF 



(firorgr fUrbert Crotrlj. 



FBOM HIS PROFOUND BIBLIOGRAPHICAL KNOWLEDGE I DERIVED MUCH 



VALUABLE MEM' WHILE I WAS ENGAGED IN THE FORMER PART OF THIS WORE 



VNI. i:y HIS PERSISTENT EXERTIONS ON MY BEHALF 



DURING THE LAST YEARS OF HIS LIFE, 



ENTOMOLOGY HAS KEEN ENRICHED HY A LARGE PROPORTION 



" F THE BPJ M in THESE PAGES. 



