Directions for collecting spiders 124 Apparatus 124 Time and locality for collecting 125 Collecting other Arachnids, mites, ticks, scorpions, etc 126 Collecting Myriapoda 130 TEXT BOOKS AND ENTOMOLOGICAL WORKS 131 Comprehensive works most useful for the student of North American insects 132 General works on classification 132 Hymenoptera 132 Coleoptera 132 Lepidoptera 133 Hemiptera 134 Diptera 134 Orthoptera 135 Neuroptera 135 Myriapoda 135 Arachnida 136 American periodicals 136 Foreign periodicals 138 The more useful works on economic entomology 140 Entomological works published by the United States Entomological Commission and by the United States Department of Agriculture 141 Works by the United States Entomological Commission 141 Bulletins of the Division of Entomology, U. S. Department of Agriculture 142 Special reports and bulletins 144 HOW TO OBTAIN ENTOMOLOGICAL BOOKS AND PAMPHLETS 145 INTRODUCTORY.