394 



INDEX OF TEXT 



Respiratory epithelium 188; system 



166 



Retina 139, 149 

 Retinula 139, 144 

 Revised notation for wing-venation 



40-43 



Rhabdo.ne 140, 144 

 Rhinarium 13 

 Rhinocypha 13, 60, 255, 290; R. fene- 



strella 255, 325; R. quadrimaculata 



258 



Rhinoneura 28 

 Rhyothemis 254, 297, 299; R. graphi- 



ptera 254; R. resplendens 254 

 Ridge, antealar 22; dorsal 22 

 Ris, on classification 258, 299; on 



British species 338; on gizzard 104; 



on lateral gills 200 ; on Odonata 2 ; 



on oviposition 223; on respiration 



189; on saccoid gills 199 

 Roan Mountain fossils 314 



Saccoid gill or saccus 75, 192, 195; 



histology of 198 

 Sadones, on rectum 115 

 Saffroning 253 

 Salivary ducts 102; glands 102; 



reservoirs 103 

 ^SAMARURINAE 310 

 Sawflies 222 

 Scape 15, 74 

 Schlossnitz fossils 314 

 Sclater, on zoogeographical regions 281 

 Sclerites, abdominal 29: cervical 19; 



of head 12 



Scudder, on Tertiary fossils 315, 316 

 Scutellum 23 

 Scutum 23 

 Sections 360 

 Sectors, of wing 65 

 Segmentation, of egg 230 

 Segments, of abdomen 28 ; of head 9 ; 



of thorax 20 

 Selys-Longchamps, on classification 



258; on Odonata 2, 3; on Filar a 



33 1 ; on external genitalia of male 219 

 Selvsian nomenclature, of wing-veins 



40-43 



Semper's nuclei 143; rod 47 (note) 

 Sense organs 137 

 Sensillae 152 

 Setae, of mask 74. 79 

 Seven-marks 251 



Sexes, comparative abundance of 326 

 Sheath, of penis 217 

 Shipley, on nomenclature 1 

 Sieblos fossils 314 

 Sieboldivs 260, 286 

 Silurian fossils 302 

 Simplex ^ill-system 75, 180 



Size, of Dragonflies 324 



Solon hof en fossils 310 



Somatic layer, of mesoderm 234 



Somatochlora 250. 288, 293, 294, 299, 



338, 343, 351; 'S. arctica 343, 351; 



S. metallica 343, 351 

 Sonoran, Lower 296 

 Sperm-capsules 214 

 Sperm -sac 212 

 Spermatheca 221 

 Spermatidia 212 

 Spermatogenesis 213 

 Spermatozoa 213 

 Sphincters 104, 113, 114, 115 

 Spiders 215, 329 

 Spines, dorsal 88; lateral 88 

 Spiracles 166, 168; abdominal 31, 



169, 201; thoracic 24, 168 

 Spiral thread 166, 241 

 Splanchnic layer, of mesoderm 234 

 Sporozoa 331 

 Squame 18 

 Statoliths 153 

 Staurophlebia 312 

 \Steleopteron 311 

 \8tenogomphus carletoni 314 

 \STENOPHLEBIINAE 311 

 Stercoral chamber 115 

 Sternellum 31 

 Sternites 29, 31 

 Sternorhabdite 222 

 Sternum 14, 20, 22, 24 

 Stilbopteryx 1, 8 

 Stipes 17 



Stomodaeal invagination 236, 237 

 Stomodaeum 73; lining of 99, 203; 



see also Fore-gut 

 Stoneflies 1, 5 

 Stonesfield Slate, fossils 310 

 Stridulating organs 156 

 Strip, postepimeral 21 

 Style, of otarium 155; of ovipositor 



222 



Submentum 18, 81 

 Subnodate gills. 195 

 Sub-quadrangle 43, 60, 64 

 Sub-triangle 43, 62 

 Subulicornia 1 



Sundew, capturing Dragonflies 329 

 Superficial segmentation 230 

 Supplement, cubital 41, 63; median 



41 ; radial 41 ; trigonal 41 

 Supplements, of wing 41, 65 

 Supracuticular pigment 246 

 Supratriangle 59 

 Suture, frontal 13; humeral 23; first 



lateral 23, 131; second lateral 23 

 Sutures of heart 161 

 Symmetry, of gizzard 107, 108 

 Sympathetic nervous system 120, 133 



