PTEROPHORID.-E—ACIPTILUS. 399 



B-. Fore wings crossed by broken cloudy stripes. 



A. spilodadijlm. 

 B^. Fore wings spotless. A. pcntadadylus. 



A". Fore wings pale drab or whity-brown. 

 C. Costa of fore wings faintly streaked with smoky brown. 



A. haliodadylus. 

 C-. Costa wholly smoky brown. A. tetradadylus. 



1. A. galactodactylus, Huh. — Expanse 1 inch. Fore 

 wings broad, the tips drooping ; shining white with a few 

 small black dots and streaks ; cilia, white, with faint smoky 

 dashes. Hind wings spreading, white. 



Antennae of the male rather long, simple, brownish white ; 

 palpi minute, threadlike, white ; head and thorax snowy 

 white ; abdomen rather short, brownish-white. Fore wings 

 not very narrow, the lobes spread rather widely behind, but 

 bent at the tips ; the costa somewhat straight ; dorsal margin 

 rather concave ; apices pointed ; colour snowy-white ; a 

 black or brown dot lies on the disk before the middle and 

 another blacker in the middle ; two divergent minute black 

 brown streaks at the base of the fissure ; one each on the 

 costal and dorsal margins beyond, and another on each lobe 

 still further toward the tips ; cilia white, clouded and 

 streaked with smoky brown. Hind wings rather broad, the 

 lobes set well apart; silky white, with the cilia quite the 

 same colour. Legs white. Female similar, but with a 

 stouter body. 



Underside of the fore wings white but tinged from the 

 base to the fissure with yellow-brown, the minute brown dots 

 and streaks of the upper side repeated ; hind wings white ; 

 body the same. 



On the wing in June and the early part of July. 



Lakva slightly flattened on the back, more so beneath ; 

 attenuated behind, and also from the third segment foi'ward : 

 the head has the lobes rounded and polished, pale green, the 

 mandibles brown ; body pale green, the raised dots large and 



