Walsh, a distinguished entomologist of the United States, has described what he calls Phytophagic varieties and Phytophagic species. 查尔斯·达尔文.物种起源.
Pins today are made in many sizes from the 3-1/2-inch stout blanket pins down to the fine, slender, bronze pins used by entomologists, 4,500 of which pins make an ounce. 佚名.神奇的知识之书.