320 



INDEX. 



Primeval butterfly, 238. 



Princeps Polyxenes (Black 

 Swallow-tail), 24, 148, 266, 

 304, 309. 



Prodigality of nature, 135, 138, 

 145. 



Pugnacity of butterflies, 116. 



Pumping stomach, see Reser- 

 voir. 



Purple, Red-spotted, see Basil- 

 archia Astyanax. 



Purple, Banded, see Basilarcliia 

 Artkemis. 



Purples, see Basilarcliia. 



Reaumur, 34. 



Rectum, 81, 82. 



Red Admiral, see Vanessa Ata- 

 lanta. 



Red Horns, see Fugacia. 



Red-spotted Purple, see Basil- 

 arckia Astyanax. 



Regal Fritillary, see Speyeria 

 Idalia. 



Relation between ornament and 

 structure, 208. 



Reproductive system, 87, 94. 



Reservoir for food or air, 82, 

 91. 



Respiratory system, 81, 92. 



Rbodoceridi, 303. 



Riley, C. V., 34, 47. 



Roadside Skipper, see Ambly- 

 scirtes vialis. 



Rudimentary organs, 40, 58, 67, 

 86. 



Rural es (Gossamer- winged but- 

 terflies), 198, 244, 246, 254, 

 256, 257, 261, 263, 301. 



Rusticus Aegon (Silver-studded 

 Blue), 152, 302. 



Rusticus Argon, 152, 302. 



Rusticus Scudderii (Pearl -stud- 

 ded Violet), 152,302,308. 



Salivary glands, 81, 92. 

 Satyr, Little Wood, see Cissia 

 Eurytus. 



Satyrodes Eurydice (Eyed 

 Brown), 14, 28, 126, 297, 307. 



Satyrs, see Oreades. 



Scales, arrangement of, 69, 207 ; 

 lustreless, 194, 196 ; of male 

 sex, 199 ; scent, 204. 



Scent organs, 24; their value 

 in classification and occur- 

 rence in insects, 250. 



Scent scales, 204. 



Seasonal dimorphism, 164. 



Seasons of appearance in but- 

 terflies, 121, 127 ; variation 

 in, 128. 



Seasons of the year, effect of, on 

 butterflies, 149. 



Secondary sexual peculiarities, 

 180. 



Semnopsyche Diana (Diana), 

 186, 188, 197, 199, 300, 308. 



Sesiadae, 215. 



Sexes, diversity of, 180. 



Sexual dimorphism, 180. 



Sexual selection, 204. 



Silk-vessels, 82, 87, 95. 



Silver-bordered Fritillary, see 

 Brenthis Myrina. 



Silver-spot Fritillary, see Ar- 

 gynnis Aphrodite. 



Silver-spot, Mountain, see Ar- 

 gynnis Atlantis. 



Silver-studded Blue, see Rusti- 

 cus Aegon. 



Sitaris, 233. 



Skipper, Clouded, see Lerema 

 Accius. 



Skipper, Cobweb, see Ocytes 

 Metea. 



Skipper, Immaculate, see Eu- 

 phyes Metacomet. 



Skipper, Peck's, see Polites 

 Peckius. 



Skipper, Roadside, see Ambly- 

 scirtes vialis. 



Skipper, Sooty, see Pholisora 

 Catullus. 



Skipper, Tawny-edged, see Li- 

 mochores Taumas, 



