16 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65. 



fuscous; coxae light pink. Fore wing drab gray, the markings 

 black; basal, antemedial, postmedial, and subterminal streaks on 

 costa; a black streak at base below cell outwardly downcurved; a 

 streak on submedian fold, and a broad oblique streak at base below 

 submedian; a short antemedial streak on inner margin, slightly 

 upbent with a small spot just beyond above vein 1; a round spot in 

 middle of cell; a small spot at lower angle of cell, and a larger 

 spot above it ; a spot beyond cell between veins 5 and 6, and a small 

 spot above G; a spot below vein 3 at cell, one below vein 2 and a 

 streak on inner margin ; elongate streaks between veins 3 and 5 and 

 spots below vein 2 and at tornus; large subterminal spots from 

 costa to below vein 6; terminal spots, large at apex, decreasing to a 

 point below vein 2. Hind wing black; base of costa, cell, and a 

 streak below cell whitish. Fore wing below black; a white spot 

 in cell, and a large spot below it; postmedial white spots from vein 

 8 to 5, and outset from vein 5 to tornus. Hind wing below with the 

 costa black. 



Expanse. — 36 mm. 



Habitat. — Potaro River, British Guiana. 



Type— C'At. No. 25898, U.S.N.M. 



Near H. thyshodes Dognin. 



EUCEREON DUTHACA. new species. 



Male. — Palpi deep mouse gray, the first joint whitish in front. 

 Head, collar, thorax, and fore wings light cinnamon drab ; two faint 

 pale ochreous spots behind vertex; a fine black medial line from 

 head to metathorax; faint fuscous spots on tegulae; black lines on 

 either side of patagia. Abdomen above scarlet; a fuscous black 

 dorsal patch on three basal segments; anal hairs black; a broad 

 black lateral line; underneath pale salmon color, the last segment 

 partly black. Legs drab gray streaked with deep mouse gray, the 

 tarsi black; coxae pale salmon color, the fore coxae only partly so. 

 Fore wing: a black antemedial line thick and outbent on costa, 

 curved, fine, and deeply inbent to fold with a projecting line to a 

 black angled basal line below cell, from the fold it is again outbent 

 to above submedian, bifurcating shortly at its tip; a curved black 

 line along inner margin to near termen; a quadrate black spot in 

 middle of cell, its lower edge outbent to a black discocollular line; 

 a short fuscous streak medially below cell ; veins from cell streaked 

 with fuscous; a very fine double, fuscous, postmedial line, outcurved 

 beyond cell, the inner line starting from a black spot on costa, the 

 outer line from vein 7, obsolescent below vein 3; a postmedial and 

 a subterminal thick short black streak between veins 2 and 3; a 

 subterminal dentate fuscous black line from vein 8 to vein 5, and 

 fuscous streaks on submedian vein and below it; marginal fuscous 



