 He was one of the most prolific taxonomists in history, publishing descriptions of over 9,000 species and genera of insects alone, some 6,400 of which were bees, and some 1,000 mollusks, arachnids, fungi, mammals, fish and plants.This includes descriptions of numerous fossil taxa, such as the landmark study, "Some Fossil Insects from Florissant, Colorado" (1913).In an obituary note that appeared in the "Nature" of Feb.14, 1948, R.B.