21. 



marked with white above except in the middle line. Legs white 

 and banded with dark brown. 



Fore wings dark tawny brown, with a tinge of coppery red in 

 certain lights. Two oblique white stripes cross the lobes, the 

 inner one being the wider, and both more or less indistinct or 

 wanting on the second lobe. There is a faint indication of a 

 white spot near the middle of the wing and a similar one at the 

 inner end of the fissure. Fringes white on the apical part of the 

 costa and on the outer margin, cut with blackish at the apex and 

 anal angle of each lobe, and also blackish in the fissure and on 

 the outer part of the hind margin of the second lobe. Hind wings 

 of the same color as the fore wings, with the first feather barred 

 with white beneath and the third feather white in the middle, 

 beyond which the fringe on both sides is thickened by heavy black 

 scales. Fifty-eight specimens examined. 



I have before me one specimen from the National Museum, 

 labelled, in Zeller's handwriting, " Oxyptil. nigrociliatus Z., N. 

 Am." It also has a printed label, " Collection C. V. Riley," and 

 therefore it is probable that this specimen was determined by Zeller 

 himself. I also have two specimens given me by Lord Walsing- 

 ham which he took in California. Although Professor Zeller de- 

 clared Lord Walsingham's Californian specimens to be identical 

 with his nigrociliatus, yet, because of the lighter color of the Cali- 

 fornian specimens, his lordship wrote : " It is open to question how 

 far the two forms may be entitled to be considered distinct ; but I 

 must leave it to be decided by some one who has a more extended 

 series of the undoubted tenuidactylus to refer to." I have the types 

 of Fitch in my possession, and there are two specimens of tenui- 

 dactylus, one of which is a male, from which the figures of the 

 genitalia on Plate VI. were drawn. I have carefully compared 

 this with the genitalia of the Californian specimens, as well as 

 other eastern specimens, and find that there is absolutely no dif- 

 ference. There is, therefore, no doubt that Lord Walsingham 

 was correct in considering nigrociliatus the same as tenuidactylus, 

 and that his Californian specimens are light varieties of the same 

 species. I have a specimen from Philadelphia as light as any of 

 my Californian specimens received from Lord Walsingham, and 

 one taken in Whitman, Mass., which is as light in color as the 

 lightest specimen from California. This, with many others, was 

 taken July 19, 18&1, by Mr. J. Elwyn Bates, who found them 

 flying around blackberry bushes in large numbers. 



Habitat* Massachusetts, New York, Delaware, Maryland, 



