76 



DIATK^A DIFFERENTIALIS. (Plate VI., figs. 7 and 8.) 

 Diatrcea differentialis Fern., Ent. Am., Vol. IV., p. 120 (1888). 



Expanse of wings, 43 mm. in the males, 54-61 mm. in the 

 females. Head, palpi, antennae, thorax and fore wings seal 

 brown. The top of the head and palpi, and the posterior 

 edge of the fore wings as far as vein 1, somewhat lighter, 

 and the fore wings sprinkled with dark scales ; a small dark- 

 brown discal spot at the end of the cell ; a terminal row of 

 seven spots of the same color, the one at the anal angle 

 being double. Hind wings pale fuscous, lighter towards 

 the base, which is of the same color as the abdomen. Under 

 side of the hind wings like the upper side in color, and the 

 under side of the fore wings a little darker ; legs pale seal 

 brown, darker in front. The female has the head, palpi, 

 thorax and fore wings of a light brownish color, the latter 

 sprinkled with brownish atoms. The discal and terminal 

 spots are similar to those in the male. The remaining 

 parts of the insect are similar to those in the male, except 

 that the shades incline to yellowish. The difference of color 

 between the two sexes, as shown above, is most remarkable. 



Habitat. Florida. Early stages and food plant unknown. 



IDALIS n. sp. (Plate VI., fig. 12.) 



Expanse of wings, 25-34 mm. Head, palpi, thorax and 

 fore wings pale mouse color, with a faint indication of an 

 oblique row of brown dots across the end of the cell in one 

 specimen. Hind wings pure white. Described from one 

 female in my collection. I have a male from the National 

 Museum, in very poor condition, which is somewhat darker, 

 and indicates that the markings on the fore wings are more 

 prominent. The hind wings are pale gray. 



Habitat. New Jersey, Georgia. I take pleasure in 

 naming this interesting insect for Miss Ida J. Russell, who 

 has rendered me most valuable assistance in my entomologi- 

 cal work. 



