82 IOWA STUDIES IN NATURAL HISTORY 



9a. race UTAHENSIS 

 PampMla sylvanoides, subsp. utahensis Skinner, Ent. News xxn, 413, 1911. 



Idaho, Wyoming, Colorado and Utah; July and August. 



I would apply this name to the specimens of sylvanoides which are green 

 below. 



10. POLITES MYSTIC 

 Hesperia mystio Scud., Proc. Ess. Inst, ni, 172, 1863. 

 Holland, Butterfly Book 351, pi. xlvi, ff. 22, 23, 1898. 



New Jersey, north into Canada and west beyond the Missouri Biver; 

 May to July. 



Most specimens from the western limits of the range are of the race 

 dacotah, but I have typical mystic from Sioux City, Iowa. In this form 

 the under surface of the secondaries is fairly dark with a contrasting pale 

 band. 



10a. race DACOTAH 

 Hesperia dacotah Edw., Trans. Am. Ent. Soc. Ill, 277, 1871. 

 PampMla mystio, subsp. pallida Skinner, Ent. News xxn, 412, 1911. 



Colorado, June; eastward into Iowa. South Dakota. 



The under surface of the secondaries is yellow, scarcely darker than the 

 pale transverse band in extreme specimens. 



ab. WEETAMOO 

 Thymelicus mystic weetamoo Scudder, Butt. New Eng. n, 1707, 1889. 



A dark brown melanic aberration occurring in the female sex. Ordinary 

 maculation much reduced, of separate spots. 



ab. NUBS 

 Thymelicus mystic nubs Scudder, Butt. New Eng. n, 1707, 1889. 

 Also a female aberration; dark areas suffused with tawny scales. 



11. POLITES BRETTUS 



Hesperia brettus Boisd. & Lee, Lep. Am. Sept. pi. 75, ff. 3-5, 1833. 



Hesperia wingina Scud., Proc. Ess. Inst, in, 173, 1863. 



Hesperia unna Plotz, Stett. ent. Zeit. xliv, 204, 1883. 



Scudder, Butt. New Eng. n, 1701, 1889. 



Holland, Butterfly Book 351, pi. xlvii, f. 41, 1898. 



Gibson, Ont. Nat. Sci. Bull. No. 6, 42, 1910. 



Florida, north to Virginia, west to Texas; April, July, August and Octo- 

 ber. Gibson lists one specimen from Toronto, Canada, determined by Dr. 

 Skinner. 



11a. race BBETTOIDES 



PampMla brettoides Edw., Papilio in, 71, 1883. 



Western Texas and Arizona. 



Brettoides has very narrow dark outer margins on the upper surface in 

 the male, with no more than a trace of the patch at the end of the stigma; 

 the under surface is likewise broadly tawny yellow. I do not know the 

 female. 



