rAMPllII.IDI: ERYXXIS ATTALUS. 



1655 



upcurved a little aplcftUy to meet the hook of the centi-iim. Cla.sp.s nearly twice as 

 Ions as the basal breadth, the upper edge excised before the Inner spine, both spines 

 similar, slender and linely pointed, separated by tlie narrowest possible slit, followed 

 at their imier base (invisible externally) by a lessor dentiform spine. 



Described from 23,99. 



Dimorphic forma. Ekyxxis att.^lus quaiapkn. The above describes wliat I regard 

 as the normal reuuUe of this species, Erynnis attalus att.u.us, tlio markings resem- 

 bling more closely those of tlie male than in a second form of the female winch seems 

 to be quite as abundant as the first. This differs from tlie normal form mainly in the 

 darker ground color of the wings, which is almost precisely that of the male, but 

 further in the lack of fulvous hairs upon the upper surface, which give the warm 

 appearance to tlie hind wing of the normal type, and in the less conspicuous markings, 

 those of the fore wings being almost white but very much reduced in size, the extra- 

 mesial series of spots being s\ibe(|ual tliroughout, formed almost altogether of minute 

 spots and streaks, excepting that tlie spot in the lower median interspace is sometimes 

 quadrate and consideralMy larger than the others; on the under surface these same 

 markings are usually more distinct than in tlie normal type, being more sharply defined 

 and more uniform. 



Accessory sexual peculiarities. The discal stigma of the male has been de- 

 scribed under the wings ; the scales contained in it consist of jointed threads, the joints 

 slender and equal in the heart of the stigma (48: 5h), accompanied by some very 

 slender, graceful androconia, the apex convex (5 d) or roundly excised (5 g) ; at the 

 base are found some feebly two or three-pronged, rod-like scales, sometimes enlarged 

 apically (5e, f) and above the apex of the stigma large, equal or apically enlarged, 

 round-tipped cover scales (5 a, b) ; iu the field below the stigma large, triangular scales, 

 feebly and slightly undulate at the apical margin (5 c). 



This is a Carolinian species (30: 8), which seems to be tolerably abun- 

 dant in the south and apparently extends some distance into the Alle- 

 ffhanian fauna. It has been found throuijhout the south from Texas 

 (Boll) to Florida (Morrison) and is credited to North Carolina by 

 Edwards. In the northern states it has been found at Racine, Wis., not 

 rare (Hoy) ; in Iowa, according to Edwards, and in Xew Jersey from 

 which place I have seen specimens. 



Several individuals were captured on one occasion in Belmont, near 

 Boston, Mass., by Mr. Roland Thaxter. This is its only known 

 occurrence in Xew England. 



^\'e know absolutely nothing concerning the life history or even the 

 seasons of this butterfly, no single date of capture having been recorded. 

 There is, indeed, no other buttei-flv of our fauna of which so little is known. 



LIST OF ILLUSTRATIONS.— ERYNNIS ATTALUS. 



General. 

 PI. 80, fig. 8. Distribution iu North America. 



Imago. 

 PI. 17, fig. 9. Female, half of upper surface. 



12. Male, both surfaces. 

 37 : 7. Male abdominal appendages. 

 48 : 5. Scales of discal stigma of fore wing 

 of the male. 



