( 549 ) 



(1892) (W. Colorado) ; id., I.e. xxv. p. 253 (1893) (nregmiia bred from bnirJi and the reverse) ; 



Haase, fJiilpisurh. Mimicry i. p. 92 (1893) ; Edw., Caiiail. Eiil. xxvii. p. 229 (1895) {oregonia 



bred from eggs of bairdi, and the reverse) ; id., I.e. p. 241 (1895) (Sioux Co., Nebraska) ; Eimer, 



Arlb. Vei-Lm.iidtsch. SchinHt. ii. p. 118. t. 7. fig. 1. (J, 9. ? (1895) (copies from Edw.); id., 



0)-W(o,-/(». p. 3G. fig. 15. (J, 18. ? (1897); Christ, Mitt. Srhweis. Enl. Gcs. ix. p. 272(1897); 



Beutenm., Joiirn. N. York. Ent. Stic. T. p. 101 (1897) (var. of nreijonia, not of aslcrias) ; 



Edw., I.e. XXX. p. 11 (1898) (? bairdi produced urrgonia (= brucei) and bairdi); Holland, 



Butt. Book p. 313. n. 14. t. 40. fig. 2. (^ (1899) (Arizona northwards) ; Brown., Ent. News xii. 



p. 301 (1901) (Salt Lake City, usually rare) ; Dyar, Bidl. U.S. Nut. Mus. Hi. p. 3. n. 17 (1902). 

 Papilid luppocraies var. oregonia Edwards, Trans. Anier. Ent. Soe. v. p. 208 (1871!) (Colombia R., ? ). 

 Papilio (asleriiis) var. idahensis Strecker, Lep. Rhop. Uet. p. 128 (1878) (Utah). 

 Papitio asterius'^AV. utnbensis id. ^ Jltdt. Jloths N. Ainer. p. 72. sub n. 17(1878) ; id., Lep. Rhop. Ilet.j 



Sujiji!. iii. p. 17 (1900) (Utah, 2 ^ ^, I '} ; var. of bainli , one (^ with abdomen spotted, the 



other as in mnchaon). 

 Papilio oregonia 'Edwavdn, Putt. N. A nier. ii. Pap.t.7. J J (1880) (Oregcm); Stretch, PapHio ii. p. 119 



(1882) (Washington Terr., larva on Artemisia, descr.) ; Edw., ibid. iii. p. 5(5. t. 1. fig. 6. 7. 8 . 



ocellus (1883) (distinct species); id., Butt. N. Ainer. ii. Snppl. p. 1 (1884); Mayn., .l/iitt. N. Amer. 



Butt. p. G. n. 4 (1891) (Oregon ; Wasliington ; Vancouver's I.) ; Edw., Canad. Ent. xxiv. p. 52 



(1892) (Utah ; West Colorado) ; id., I.e. xxvii. p. 241 (1895) (Sioux Co., Nebraska; S.E. 



Wyoming ; Pullman, Washington ; Idaho) ; Christ, I.e. ix. p. 273 (1897) ; Elwes, Pi-oc. Ent. 



Soe. Loud. p. 11. (1897) (= machaon) ; Wright, Butt. West Coast ed. ii. p. 87. u. 26. t. 3. fig. 26. ? 



(1906) (WaJiington). 

 Papilio machaon, Hagen, Canad. Ent. xiv. p. 178 (1882) (Washington Terr.). 

 Pajiilio oregmiius (!), id., Papilio ii. p. 150 (1882) (cannot be separated from zolicaon) ; Haase, 



Untersach. Mimicry i. p. 92 (1893). 

 Papilio oregomis (!), Hagen, Psyche iii. p. 415 (1882) (Washington Terr., " = zolicaon "). 

 Papilio hfjUandi Edwards, I.e. xxiv. p. 50 (1892) (W. Colorado) ; Holland, Butt. Bonk p. 314. 



n. 16. t. 40. fig. 3. J (1899) (Arizona; Colorado). 

 Papilio brucei Edwards, Canad. Ent. xxv. p. 253 (1893) (name for oregonia from Colorado) ; id., I.e. 



xxvii. p. 239 (1895) (Colorado ; '■ nov. spec") ; id., Butt. N. Amer., Pup. iv. (1897) (ic«(;«i is 



result of hybridism between P. oregonia and bairdi ! ; life history, results of breeding) ; Elwes, 



I.e. p. 11 (1897) (grad.ition from oregonia through brucei to zolicaon) ; Fletch., Rept. Ent, Soe. 



Ontario xxxi. p. 56 (1900) (Regina, Canada ; aho in the Kootenay Mts. at Kaslo) ; Burr., Enl. 



News xii. p. 244 (1901) (Yellowstone Nat. Park). 

 Papilio machaon oregonia, Eimer, Artb. Verwandtsch. Schmett. ii. p. 109. t. 6. fig. 2 (1895) (copy from 



Edw.). 

 Papilio bairdi oreejonia, Dyar, I.e. (1902). 

 Papilio bairdi brucei, id.. I.e. 

 Papilio bairdi hnllandi, id., I.e. 



d ? . Tricbroinatic in both sexes, at least in certain districts. 



«'. f. bairdi Edw., I.e. Similar to P. polijxencs astcrius, the sexes differing 



in a similar way as iu the ordinary form of that insect. The discal spots are paler 

 on the underside than m astffiu.s, and gradually shade off proximally ; size of these 

 spots very variable. Many specimens with vestige of yellow lateral stripe 

 posteriorly on abdomen. 



b'. f. hollandi Edw.,/.(,'. Like the preceding, but the abdomen yellow, striped 



with black, as in the next form. 



c'. L oregonia Edw., I.e.; hrucci id., I.e. Similar in appearance to 



P . machaon \ anal ocellus pnpilled as in the preceding forms. Colorado specimens 

 {brucei) are said by Edwards to be different from Oregon individuals (oregonia), but 

 we fail to find any constant distinction, the differences given by Edwards not at all 

 holding good. 



This yellow form doe.s not occur in Arizona, the black f bairdi being the only 

 one found there, while the black form has not been met with in Oregon. Polj-- 

 chromatism of a species in one district and nionochromatism of the same species in 

 another country is a phenomenon often met with among insects. Edwards had 



