346 



British Dragonfiies. 



Nymphs — continued. 



skins, preparation of, 317 



state, duration of, 19 



storage of preserved speci- 

 mens, 318 



synonymic tables of, 40 



travelling on dry land before 

 disclosing imago, 21 (foot- 

 note) 

 iiympltula, 252 



O. 



Occipital region, 48 



ocellata, 190 



ocelli, 46 



Odonata, I, 28, 29, 30, 313 



diagnosis of, 29 

 olvinpia, 123 

 opalina, 123 

 Original description : 



^. ccEridea, 184 



vS. cyanea, 197 



^. grandis, 204 



^. isosceles, 210 



^. juncea, 190 



^■E. mixta, 177 



A. imperator, 164 



A. niercurialc, 291 



A. puella, 283 



A. piilcliclliim, 277 



B. pratc/isc, 171 



C. avica, 141 



6". annulatus, 157 



6". splcndciis, 221 



t'. virgo, 214 



i?. cyatliigeruni, 298 



^\ naias, 244 



6". vulgatissiiniis, 152 



/. e/egans, 271 



/. pii/iii/io, 266 



Z. diprcssa, 100 



Z. d/yas, 229 



Z. dnbia, 63 



Z. fulva, 119 



Z). quad rimnculata, 107 



Z. spousa, 233 



Original description — contuun'd. 



O. cccrulesccns, 123 



O. canccllatuin, 127 



O. curtisii, 148 



Z". nymphula, 253 



Z*. pennipes, 239 



Z. tcncllitiii, 262 



aS. arctica, 137 



tS'. flaveoluin, 82 



S. fonscoloinbii, 77 



;S'. metallica, 131 



J>. sangiiinciiDi, 88 



^. scoticinii, 94 



6'. striolatiun, 69 



;5'. vulgatnni, 71 

 Orthetnini arni/csccns, 12 1, 122, 



156, 331 

 canccllatuni, 5, 24, 121, 126, 



331 



Orthoptcra, 9 



should Dragonfiies be placed 

 in the order ? 26 

 Osmilidcc, 28 

 Ova of Dragonfiies, 15 

 Overcrowding nymphs, 316 

 Ovipositing in mud, 256, 294 

 Oviposition in captivity, 313 

 Oviposition : 



.^. grandis, 15, 205 



yE. jiincca, 15, 193 



Agrian, 12 



j4. mcrcnrialc, 13, 294 



^. iuipcrator, 1 60 



f. annulatus, 160 



Z'. cyathigenini, 13, 301, 332 



Z,-,v/,'., 13 



Z. j/(wjrt, 235 



Z. dcpressa, 102 



Z. quadriniaciilata, I 10 



Z'. nymphula, 13, 255 



Z. pcnnipcs, 14 



S. flaveoluin, 84 



iS". scoticum, 96 



^. striolatum, 12, 73 

 Ovipositor, 54 

 Oxygastra ri/rtisii, 147, 312 



