( •«-! ) 



PajiiUo machaon var. aliaska, Edwards, Papilio ii. p. 75 (1882) (Hudson Bay; Alaska; common at St. 



Michael's on coast above outlet of Yukon R. ; Dalles, Columbia E.) ; id., I.e. iii. pp. 58. 60 



(1883) ( = HimaIaTan form, false); Webster, Caiiad.Ent. xxvi. p. 117(1894) (Alaska, eastw. to 



Hudson Bay) ; Christ, Mitt. Sdnveiz. Ent. Gex. ix. p. 270 (1897) ; Lyman, Oinml. Ent. xxxii. 



p. 119 (1900) (Dawson, Yukon) ; Stand. & Reb., Cat. ed. iii. p. 2. n. 4h (19(11) (Alaska). 

 PajiiUo machann aliasha, Maynard, ^fan. N. Amer. Butt. p. 6. n. 3a (1891) (Oregon northwards) ; 



Dyar, Bull. U.S. Nat. Mus. Iii. p. 3. n. IGa (1902) (Alaska ; North Pacific States) ; Wilson, Repf. 



Ent. Soc. Ontario xxxiv. p. 90 (1904) (Nagagami R., Hudson Bay slope) ; Keelo, ibid. xxxv. 



p. 16 (1904) (common along the shores of Mayo Lake, and valley of Mayo R,, Yukon Terr., 



July & August). 

 The black band of the hindwing is broader than in P. machaon kamtschadalus 

 Alph^r. (1897). The anal ocellns is alwajs blind as in the other forms of 

 P. machaon, the black admarginal sjiot standing at the distal side of the orange 

 spot, not within it. 



The insect is rare in European collections. Sometimes one finds as aliaska 

 and oi-egonia Old-World specimens of P. machaon in collections. We have received 

 ourselves from America two machaon, of which one is undoubtedly a Sikhim 

 individual and the other a British one. 

 Hub. Alaska ; Oregon ; Hudson Bay. 

 In the Tring Museum one bad S. 



VI. Thoas Group. 



Underside of thorax and abdomen not striped with black, being either all 

 yellow, or black dotted with yellow laterally or bearing a yellow lateral line. 

 Hindwing beneath from base to disc yellow or black, no black bands Ibrming a 

 large V ; PC at two-thirds or nearer apex of basal cellule, the latter not much 

 produced. 



Young larvae with dorsal tubercles which are replaced by small circular spots 

 in later stages ; adult larvae with yellowish side-stripe on thoracical segments, a 

 very large pale dorsal or dorso-lateral patch occupying the central segments 

 (V-shaped or mesially divided) and a large side-patch on the last segments tapering 

 in front, these markings rather ill-defined. 



Key to the species : 



a. Tail with yellow spot in centre of widened apical portion . b. 

 Tail without yellow spot in centre on upperside ... e. 



b. Forewing beneath without black band across cell . . c. 

 Forewing beneath with black band across cell continued to 



hindmargin ......... <l. 



c. Discal patch R-— K' of forewing projecting much lieyond 



patch R' — W ; dilated part of tail rounded ; tenth 



tergite of $ bifurcate, the projections curving laterad . Species No. 67. 



As before ; spatule of tail more elongate ; tenth tergite of 



$ short, simple Species No. 08. 



Discal patch U-— R^ of Ibiewing very little imiji'cting 

 beyond patch R' — M' ; cell olten with yellow spot, 

 striped with yellow and black beneath ; spatule of tail 



elongate ; tenth tergite of S long Species No. 00. 



il. Yellow band of forewing parallel to distal margin . . Species No. 7:t. 



Yellow band of forewing interrn]iteil, both portions oblique, 



the posterior portion continuous with the broad cell-bar. Species No. 74. 



