March iS9S.] PSYCHE. 189 



Athysanella minuta n. sp. Brachypterous Last ventral segment slightly longer than 



female. Length 2.5 mm. The smallest and the preceding, hind margin evenly truncate, 



darkest species in the genus, thoiigli the Ovipositor exceeding pvgofers by less than 



head and pronotum are nearly as broad as in one sixth of its length. 



magdalena, which it somewhat resembles. Brachypterous male. Length 2 mm. Ven- 



Front about a tenth longer than wide, once ter except lateral margins black. Valve large, 

 and five sixths the length of the clypeiis. ^ convex, very broadly rounded, deep black 



Clypeus one-fourth longer than bj-oad. with a fine yellow margin. Plates yellowish, 



Vertex very obtusely angulate, slightly extending less than the length of the valve 



transversely depressed posteriorly, length beyond it. Beyond the valve the plates are 



little more than five sevenths of width equilaterally triangular, the inner margins 



between eyes. Pronotal width twice and diverging. 



one half the length, the hitter less than that Described from one female and two 

 of the vertex. ,„.,|gg collected by myself at Fort Col- 

 Color sordid fulvous. Head markings as ,. „ , ,- , , a ^1 1 

 , , „ . ..i_ bns, Colo., une 7tn to Ausr. otii and 

 in mai^dulena, but daiker. Pronotum with ' ^ / o 



four dots near middle, the two inner darker, at Forrester's Ranch, on the Upper 



and with three behind each eye. Abdomen Laramie River. Colo., Aug. 3id. 

 quite obscured and dark throughout. 



DESCRIPTION OF A NEW SPECIES OF ARCTIIDAE WITH A 

 TABLE OF THE SPECIES OF IDALUS. 



BV HARRISON G. DYAR, WASHINGTON, D. C. 



Idalus picJieseush n. sp. — Head white, a the veins and centered by the discal cross 

 large deep vellow spot on the vertex and the vein, bordered with white on both sides, 

 upper half of the front black, palpi black except centrally. Basal patch similar, broad- 

 above and at tip. Thorax white collar e.st at internal margin (the yellow median 

 broadly lined behind with crimson and the space thus much widest on costa^ , black, cut 

 patagia less distinctly bordered with this by white veins. Secondaries white. Below 

 color ; a deep vellow patch in center of thorax no markings except a few dusky scales on 

 with two black dots before and two behind; discal cross vein of lore wings. Expanse 44 

 a yellow patch in thecenter of each palagium. mm. 



Abdomen crimson above with a dorsal row of i (J Piches and Peiene vols., Peru, 2000- 



indistinct white spots. Below white, fore 3000 ft.(Soc. Geog. de Lima). LI. S. Nat. 



coxae inwardly, posterior orbits and a tuft Museum, t3pe no. 3796. 

 below fore wing crimson ; fore femora and 



tibiae shaded with gr.-iy, middle femora much '^"'''^ "f'pec'C-^ of Idalus. 



less so, the middle and posterior tibiae with i. Primaries with a dark spot outwardly 



a black spot at tip. Fore wing thinly scaled between vein 5 and 6 2 



outwardly, slightly irridescent, deep yellow, Primaries with terminal field immac- 



costa and fringe white; discal band black, ulate y 



straight, a little narrowed centrally, ending 2. Discal band which crosses wing bro- 



at costa and margin, cut with white by all ken only by the veins 3 



