30 INDEX TO MISSOURI ENTOMOLOGICAL REPORTS. 



Page. 

 Silkworms Continued. 



SUMMARY 138 



Successful silk culture possible in this country, 138 Comparative value 

 of the different species of silkworms, 138. 



INNOXIOUS INSECTS. 

 The Horned Passalus 139 



Its frequent occurrence in old logs, 139 The noise produced by the beetle, 

 139 It occurs only in decaying wood, 140 The larva and its excep- 

 tional character, 140 Description of the larva, 140 Previous descrip- 

 tions of Passalus-larv;e, 141 Description of the pupa, 141. 



The Great Leopard Moth 141 



Characters of the larva, 141 Food-plants, 142 Hibernation and trans- 

 formations, 142 The imago, 142 The larva able to resist extreme 

 cold, 143 Description of the larva, 143. 



The Isabella Tiger Moth 14 



Characters of the larva, 143 Food-plants, 143 Cocoon and chrysalis, 



143 The moth, 144 The popular name "Fever- worm" in the South, 



144 No parasite known of this and the preceding species, 144. 



The Acorn Moth 144 



The egg laid in acorns that have been ruined by Balanlnus rectus, 144 

 Habits of the larva, 144 Characters of larva and moth, 145 Descrip- 

 tion of imago, larva and pupa, 145. 



REPORT V. 



[Submitted December 2, 1872 ; published April 18, 1873.] 

 Preface 3 



ENTOMOLOGY, ITS RELATIONS TO AGRICULTURE AND ITS ADVANCEMENT... 5 

 Definition of Entomology, 5 The term "insect," 5 The four Subking- 

 doms of the Animal Kingdom, 6 Characteristics of insec's, 7 Classi- 

 fication of insects, 8 Hymenoptera, 9 Coleoptera, 10 Lepidoptera, 

 11 Herniptera, 12 Diptera, 13 Orthoptera, 14 Neuroptera, 14 

 Osculant and aberrant groups, 15 Importance of entomology as a 

 study, 17 Economic importance of entomology, 18 Relation of in- 

 sects to Agriculture, 18 Damage inflicted by insects to Agriculture 

 and Horticulture, 19 Progress of economic entomology, 19 Economic 

 entomology in Europe, 19 Insects in America much more injurious 

 than in Europe, 21 State entomologists and entomologists in public po- 

 sitions in the United States, 21 How to counterwork noxious insects, 

 23 Prevention, 24 Checking the spread of injurious insects, 24 

 Cure, 25 Modification of Dr. Hull's Curculio-catcher, 25 Encourage- 

 ment of the natural enemies of injurious insects, 26 Duties of a State 

 Entomologist, 27 Annual report, 27 Correspondence and other du- 

 ties, 28 How to collect, preserve and study insects, 29 Appliances 

 for collecting, 29 Use of the umbrella, 29 The knapsack, 30 The 

 hand-net, 30 The frame of the net, 30 The bag of the net, 31 Use 

 of the sieve, 31 Sugaring, 32 Attracting moths by light, 32 How 

 to kill insects, 32 The cyanide bottle, 32 Use of chloroform, 33 

 Entomotaxy, 34 Insect pins, 34 How to pin insects, 34 How to 

 mount small insects, 34 Spreading board, 35 Drying box, 36 In- 

 sect boxes and cabinet, 37 Mr. Liutner's boxes for Lepidoptera, 38 

 Substances for lining insect boxes, 40 Preserving insects in the collec- 

 tion, 41 Relaxing specimens, 41 Breeding insects, 41 Breeding- 

 cage, 42 Note-book of the collector, 43 How to transmit insects, 

 44 Text-books, 44. 



