THE CANADIAN ENTOMOLOGIST. 181 



INCISALIA (LEPIDOPTERA) FROM TEXAS. 



BY JOHN H. COOK AND FRANK E. WATSON, ALBANY, N. Y. 



Some years ago there came into our possession a number of butter, 

 flies of the genus Incisalia, which we recognized as belonging to an 

 undescribed species, closely allied to irus. No data accompanied the 

 specimens, but we have recently learned that the species is found in some 

 abundance near Houston, Texas. 



Incisalia hadros* new species. — Wings above, 3 , brown ; 9 , bright 

 ferruginous, with a coppery lustre, slightly clouded near bases, apices and 

 outer margins ; fringe concolorous, except for a narrow edging of white 

 near the apex. Wings beneath dark brown, the secondaries with a ruddy 

 cast and a rather obscure overlay of dull griseous scales on the outer 

 margin, broadening toward the anal angle and running up the inner 

 margin about one-third of the way. Practically all the other elements of 

 design (as found in irus) may be discerned in some specimens as vaguely 

 lighter and darker markings almost obliterated by the tendency to uni- 

 formity in the coloration ; but the only remnants visible throughout the 

 series are the extramesial while line on primaries and a white dash 

 occupying the costo-subcostal interspace in the middle of the front margin 

 of the secondaries. In the types ( <$ and ° ) and two paratypes ( * and 

 9 ), which will be sent to the U. S. National Museum, the black spot 

 crowned by a rusty crescent occupying the first median interspace on the 

 secondaries is in evidence. This mark is, however, obliterated in many 

 individuals, especially among the males. 



The types were selected to show the more usual form with variegation 

 reduced to a minimum, the paratypes to show a somewhat brighter phase, 

 in which the elements of design are visible, though obscure. 



Expanse, A, , 32 to 36 mm.; 9 , 35 to 38 mm.f 



Incisalia Henrici, G. & R., new variety, solatus. %— Differs from the 

 usual northern form in that the difference in colour between the basal and 

 limbal areas of the wings beneath is comparatively slight. The brighter 

 yellows are, in the variety, replaced by yellow-brown, and the blackish- 

 browns are lightened to faded chocolate. The hoary margin of the 



*uopo«, well-grown. 



fThe expanse of irus varies in the male from 28 to 30 mm., and in the female 

 from 30 to 32 mm. All measurements taken from apex to apex through 

 mesonotum. 



XSolatus, sunburnt. 

 June, 1909 



