174 ME. P. WALKER OIST HETEROCEROUS LEPIDOPTERA 



base of the 1st inferior vein, and with another on the exterior border. 

 Length of the body 7 lines; of the wings 14 lines. 



Gen. Darna, n. g. 



Mas. Corpus robustum. Proboscis obsoleta. Palpi porrecti, sat va- 

 lidi, caput paullo superantes ; articulus 3 US parvus, conicus. Antennce 

 breviusculae, pectinatse. Abdomen alas posticas non superans, fasci- 

 culo apicali sat magno. Pedes robusti, pilosi. Alee latiuscula3, brevi- 

 usculae. 



Male. Body stout. Proboscis obsolete. Palpi porrect, moderately 

 stout, extending a little beyond the head ; 3rd joint minute, conical. 

 Antennas rather short, moderately pectinated. Abdomen not extend- 

 ing beyond the hind wings; apical tuft rather large. Legs stout, 

 pilose. Wings rather broad and short. Fore wings acute; costa 

 straight ; exterior border hardly oblique ; the four inferior veins ap- 

 proximate. 



209. Darna plana, n. s. Mas. Nivea, alis anticis pallidissime cervi- 

 nis, dimidio postico niveo, linea exteriore e atomis nigris, alis posticis 

 subtestaceo tinctis margine exteriore pallidissime cervino. 



Male. Pure white. Fore wings very pale fawn-colour, except for half 

 the breadth along three-fourths of the length ; an exterior line com- 

 posed of black speckles, parallel to the exterior border, and hardly 

 apparent except on the costa and by the interior border. Hind wings 

 with a very slight testaceous tinge ; exterior border very pale fawn- 

 colour. Length of the body 3| lines ; of the wings 9 lines. 



Gen. Arriiapa, n. g. 



Mas. Corpus robustum. Proboscis obsoleta. Palpi porrecti, sat gra- 

 ciles, caput vix superantes ; articulus 3 U8 conicus, minimus. Antennce 

 subpeetinatae. Abdomen alas posticas vix superans. Pedes brcvius- 

 culi, laeves, sat graciles ; tibiae posticae calcaribus duobus apicalibus, 

 uno longissimo. Alee latae, non longae ; anticac acutac, costa subcon- 

 vexa, margine exteriore recto. 



Male. Body robust. Proboscis obsolete. Palpi porrect, not thick, 

 hardly extending beyond the head; 3rd joint conical, very minute. 

 Antennae slightly pectinated, moderately long. Abdomen hardly ex- 

 tending beyond the hind wings. Legs rather short, not stout nor 

 pilose ; hind tibiae with two apical spurs, one of which is very long. 

 Wings broad, not long. Fore wings acute, slightly and transversely 

 rugulose; costa slightly convex ; exterior border straight, very slightly 

 obliqofl ; 3rd inferior vein very near the 2nd. 



210. Akkiiapa frontalis, n.s. Mas. Lateritia, capitc thoraceque 

 antieo ferrugineo-fuscis, abdomine absque posticis albidis, alis anticis 



