306 MALE GENITALIA OF NORTH AMERICAN HESPERIIDAE 



The Species is like trifasciatus Hewitson, and it is possible that 

 it is but a form of that species, though Godman and Salvin 

 consider it to be distinct. 



They state there is a pale and a dark form of Injascialus flying 

 together at the same time of year in tolerably equal numbers. 

 Hewitson described one of the former and Godman and Salvin 

 figure one of the latter. ^^ 



Our limited series shows the dark form from Paraguay and 

 Brazil, and the pale form from Mexico and Cuba. 



Ruptifasciotus is similar, but the distinct oblique Ijands of the 

 primaries of trifasciatus are in this species or form replaced by 

 indistinct and rather irregular macular bands, and those of the 

 secondaries are broken up into spots. 



The Godman and Salvin figure of the genitalia agrees with that 

 of our specimens of trifasciatus. We figure a ruptifasciatus 

 presumably from northern Mexico, and agreeing with the Runj'^on 

 pair. 



The tegumen is asymmetric, the hooded portion somewhat 

 different on the two sides; the scaphium well developed on the 

 left side is only a linear arm on the right; the sides of the girdle 

 are not of the same width; the saccus is a mere ring; the right 

 valve ends in. a fan-shaped process one side of which is bent at 

 right angles to the other in nature, and there is a conspicuous 

 rod at the base (this rod spatulate in our examples of trifasci- 

 atus) ; the left valve ends in a process different from that of the 

 right valve and the rounded ventral outer margin is slightly 

 dentate (strongly serrate in trifasciatus) ; the aedoeagus is simple, 

 long and slender. 



30. Grais stigmaticus Mabille (Fig. 30.) 



Biol. Ccnt.-Amer., Rhopalocera, pi. 85, fig. 26, (lcS94). 



This species lacks the costal fold. It is a tropical type, 

 crossing the border into Texas. 



The uncus ends in a single beak, broad, swollen above, lobed 

 on the sides below, and bearing a tooth on each side at the base; 

 the scaphium is well developed, smooth; the aedoeagus carries 

 a sponge-like mass of hairs. 



»3 PI, 88, figs. 1 and 2. 



