CONTENTS 



CHAPTER I 



PAGE 



Entomology as a branch of preventive medicine. Zoological Position of the 

 blood-sucking Arthropoda 3. The Order Acarina 5. Geographical 

 Distribution. Table of regions 7 ........ 1 



. . CHAPTER II 



Anatomy and Physiology of the Blood-sucking Diptera. 



SECTION 1 



General Structure chitin 11, nomenclature of exo-skeleton 12. The Head 

 and its regions 13, eyes antennae 16, mouth parts and sucking ap- 

 paratus 19, their main features in the Diptera Tabanus as a type 22, 

 other Orthorraphic flies 28, the mosquito 29, mechanism of the parts 33, 

 mouth parts of Musca 38, its pseudotracheal membrane 42, Genus 

 Philaematomyia 48, the Stotnoxys group 51, Glossina.58, Hippobosca 

 62, internal structure of the head 66, the neck 67. The Thorax 68, 

 Tabanus, Culex, Stotnoxys nomenclature of the thorax 76, the wings 

 77, systems of venation 78, the legs 84. The Abdomen 85, external 

 genitalia, Phlebotomus 86, Glossina 88, Musca, 89. Chaetotaxy, 90. 

 (Plates I to XIX) 8 



SECTION 2 



The Internal Structures. The Muscles 93, mechanism of flight 95. The 

 Respiratory System 96, spiracles tracheae and air sacs, their structure 

 mechanism of respiration 99. The Alimentary Canal 100, development 

 its divisions alimentary tract of Tabanus as a type 102, mosquito 109, 

 Cyclorraphic flies 112, Musca, Philaematomyia, Glossina, Hippobosca. 

 The Salivary Apparatus 119, function of saliva. Digestion and absorption 

 of blood 123, function of mesenteron -significance of the peritrophic 

 membrane secretion and excretion regeneration of cells. The Heart, 

 Vessels, and Pericardial cells 128, mechanism of the circulation the 

 haematocoele 129, the blood 131, the fat body. The Reproductive 

 System 132, general structure relations of the sexes the male organs, 

 133, Culex, Tabanus, Phlebotomus, Musca, Glossina, Hippobosca the 

 female organs 135, the ovaries structure of follicles oviduct sper- 

 mathecae accessory glands pupiparous flies 138, the origin of the pupi- 

 parous habit 139, Musca bezzii 140, Glossina 141, the ovaries, uterus, 

 spermathecae milk glands, Melophagus 145, spermatozoa 146. The 

 Nervous System 146, Anopheles, Tabanus, Musca. Literature, 148. 

 (Plates XX to XXX) 93 



CHAPTER III 



The Order Diptera. 



SECTION 1 



ORTHORRAPHA NEMATOCERA. Metamorphosis and early stages 151, classifi- 

 cation of Diptera 155, Family Chironomidae 157, Ceratopogon, Culi- 

 coides habits early stages breeding technique. Family Simuliidae 165, 

 key's to 'the Indian and North and South American species bionomics 



