l62 



yellow scales, or a spot more or less elongated to 3 mm. All 

 specimens show on the same place on the underside of the wings 

 a large yellow spot. Concerning IV. the marginal band of the 

 upper wings is mostly 7 mm. of 2 spec. 9 mm. The second and 

 third band near the costal margin are 5 to 7 mm. broad. The 

 statement of Mr, Lucas that the bands and the margins are of 

 deeper black, and the margins internally less sinuated in P. 

 riitulus does not agree with the specimens of both species in my 

 hands. 



There are before me 23 /wrw-wi- males, females and zh.P.glaucns 

 from the most different localities of the U. St. (Me., Mass., N. 

 Y., Md., La.,. Miss., Ky., Tex.), and one yellow female from 

 Owaska, Kamschatka. They were chosen out of a very large 

 number to represent all varieties in the collection. The size is 

 very different, the smallest one from S. E. Kentucky has the 

 size and characters of pi. 5 of i W. H. Edw., representing the 

 arctic form. A female ab. glaucus from the same locality meas- 

 ures only 82 mm. The largest male and fem. from Dallas, Tex., 

 measure 125 mm., also pretty near 5 inches, more than Mr. Ed- 

 ward's maximum. The length and form of the tail is very vari- 

 able from 10 to 15 mm., decidedly spathulated or not at all. A 

 male from Osage, Miss., has a tail only 10 mm. long, but the 

 spathula 4 mm. broad. Comparing the differences quoted for P. 

 riitulus with P. hiriius, we find as follows : 



L The sub-marginal ray of yellow spots on the under side of 

 the primaries of/*, tjirnus consists commonly of a series of sepa- 

 rated spots of semi-circular or semi-oval shape, the convex side 

 internally. Sometimes these spots are connected and form a 

 band more or less waved internally, as the female from Kam- 

 schatka. A male from Lutherville, Md., and one from Kentucky 

 have a straight, sloping band, only the two last spots near the 

 hind margin separated. A male from Norway, Me., the same 

 band, only the last spot separated, just in the same manner as 

 some P. rutjilus. The yellow female from Lutherville, Md., has 

 the ray as commonly in P. tiLrnits. 



II. The fulvous spot at the internal angle is never wanting; 

 the females possess a very large round spot ; the males have a 

 very small spot 2 to i mm. long, fulvous or red (yellow and more 

 linear in P. rutului). I have males from Texas of P. turnus'^x'Oix 

 a very small yellow spot, only interiorly with a few fulvous 

 scales ; but a male from Osage has linear yellow spot 3 mm. 

 long, just as some P. rutulus. 



III. The fulvous marks and the sagittate spots are wanting 

 in two males from Osage, Miss., and from Massachusetts. In- 

 deed, there is a faint indication of fulvous scales in the cell above 

 the eyespot of the anal angle, but I find similar indications by 

 some P. riitiiliis. A female from Osage, Miss., has the fulvous 

 marks and spots as commonly. 



