HESPERIOIDEA OF AMERICA 109 



Southwestern Colorado, New Mexico, Cherry County, Nebraska (Leus- 

 sler) ; May and June. 



race TEXAN A 

 M. streckeri, subsp. texana B. & McD., Contr. i, no. in, 39, pi. n, f. 9, 1912. 

 Southern Texas. 



5. MEGATHYMUS SMITHI 



Megathymus smithi Druce, Biol. Cent.-Am., Het. n, 320, pi. 69, f. 5, 1896. 

 Skinner, Trans. Am. Ent. Soc. xxxvn, 205, 1911. 



I have seen one specimen from Corpus Christi, Texas, in the Barnes 

 Collection. 



6. MEGATHYMUS NEUMOEGENI 



Megathymus neumoegeni Edw., Papilio n, 27, 1882. 



Megathymus aryxna Dyar, Jn. N. Y. Ent. Soc. xin, 141, 1905 (partim) ; 



(fide B. & McD.). 

 Skinner, Trans. Am. Ent. Soc. xxxvir, 206, 1911. 

 Skinner, Trans. Am. Ent. Soc. xxxvii, 207, 1911 (fide B. & McD.). 



Arizona, September. 



According to Barnes and McDunnough's revision the females can read- 

 ily be separated from aryxna. They say : "in every instance the $ could 

 be separated at once on wing pattern, the yellow band on primaries being 

 much broader and either touching or broadly coalescing with the costal 

 spot at end of cell. ' ' Of the male they say that neumoegeni is usually 

 a smaller and slighter species, and give the following points of difference: 



"(1) in neumoegeni the spots are often small, well separated, irregu- 

 larly rounded; when forming a more or less coalescent band spot 2 from 

 anal angle is usually almost square and its inner margin is not prominent- 

 ly wedge-shaped as in aryxna. 



"(2) The fulvous hairing at base of both wings is much more extended 

 in neumoegeni, covering on the secondaries most of the area between the 

 subterminal spots and the base of wing. The presence or size of yellow 

 spots in the basal area beneath the fulvous hairs we have found of no 

 specific value. 



"(3) The underside of secondaries of neumoegeni is usually distinctly 

 paler in color, due to a greater sprinkling of white scales (compare Figs. 

 2 and 7). The whitish subterminal band is very variable in both species, 

 in both distinctness and extent, and of no value for purposes of separa- 

 tion. ' ' 



In spite of this great similarity of the two species, the form of the male 

 genitalia verifies their distinctness. 



6a. race STEPHENSI 

 Megathymus neumoegeni Wright (not Edw.), Butt. W. Coast 255, pi. xxxn, 

 f. 483, 1905. 



