584 On Heterocera from Costa Rica. 



tufts. Abdomen above brown ; a dark subdorsal spot at 

 base. Fore wings brown tinged with violaceous, somewhat 

 paler on inner margin ; a very deeply dentate inner line, 

 fine, black, inwardly shaded with lighter brown in cell, and 

 outwardly so shaded below cell ; a large irregular spot at end 

 of cell finely outlined with whitish buff; a somewhat similar 

 outer line crossed by a dark wavy postmedial shade curved 

 around cell 5 on outer angles of outer line clusters of black 

 and light brown scales, connected by a wavy light brown 

 shade, and a white line above submedian ; a dark shade 

 between 3 and 4 ; a wavily dentate light brown line, partly 

 shaded outwardly with dark brown ; terminal diverging 

 black streaks at ends of veins. Hind wings brown ; some 

 light brown shadings at anal angle surmounted by a white 

 and a black streak ; a terminal black line, cut by the veins, 

 which are buff at their tips ; fringe light brown. Under- 

 neath the abdomen and wings are buff, irrorated with brown 

 except on discal area of fore wings, which is light fuscous 

 without irrorations. 



Expanse, <? 98, ? 108 mm. 



This species is very close to Naprepa houla, Dyar, and I 

 should hardly have considered it distinct had a specimen not 

 been labelled by him as new. 



Pkocolax, gen. nov. 



Differs from Colax, Hiibn., in having vein 10 on fore 

 wings from beyond 7, and the female has the antennae 

 fasciculate. 



Procolax apulana, sp. n. 



c£. Head and abdomen above grey-black; collar dark 

 grey-brown. Thorax lilacine buff, the patagia reddish 

 brown. Abdomen underneath brownish. Fore wings 

 reddish brown, the veins partly black; the costal margin 

 dark brown and black irrorated with buff scales ; the lines 

 dark brown ; the basal nearly straight, followed by a broad 

 dark shade ; the anteinedial slightly excurved ; the post- 

 medial nearly straight, somewhat lunular below vein 4 ; a 

 medial dark shade from costa, widening on inner margin; 

 the inner margin narrowly shaded with lilacine; a long silver 

 streak on discocellular containing a reddish-brown streak ; a 

 small silver spot in cell medially below subcostal ; a sub- 

 terminal lilacine shade, somewhat incurved below vein 4 to 

 tornus, beyond which the outer margin is shaded with lilacine 



