M^.vAs. 247 



Genus M^NAS. .„ 



Type. 



Mfsnas, Ilubu. Verz. p. 167 (1827) rocula. 



Lemj/ra, Wlk. vii. 1690 (1856) externa. 



Savara, Wlk. xxxi. 320(1864), nee Wlk. 1862 simplex. 



Jiorseha, Wlk. xxxi. 318 (1864) surgens. 



i?««C(ea, Wlk. XXXV. 1983 (1866) simplex. 



l^alastra, Bar, Ann. Soc. Ent. Fr. (5) iii. p. 300 (1873) lahoulheni. 



C'arhisa, Moore, Lep. Atk. p. 41 (1879) venosa. 



JSatfenia, Wllg;r. (Efv. Svensk. Akad. Forh. xxxii. (1) p. 102 



(1876), nee Thorns. Col. 1857 ■ scapulosa. 



Proboscis aborted, minute ; palpi porrect, not reaching bej'-ond the frons ; 

 head, thorax, and abdomen clothed with rough woolly hair ; antennse of male 

 bipectinate with long branches, of" female with short branches ; tibiae clothed 

 with rough hair, the spurs short, hind tibias with the medial spurs absent ; 

 abdomen of female with thick floceulent anal tuft. Fore wing with vein 3 

 from towards angle of cell ; 5 from above angle ; 6 from upper angle ; 7, 8, 9, 

 10 stalked ; 11 free. Hind wing with vein 3 from before angle of cell ; 5 from 

 j ust above angle ; 6, 7 from upper angle ; 8 from middle of cell. 



Larvce of S. American species clothed with two fascicles of long hair on 

 each somite, with dorsal brushes of shorter hair on somites 5-10 finely plumose 

 and clear red, the rest of the hair black. They live in water on aquatic plants, 

 breathing the air retained among the plumose hairs appearing as large bubbles ;. 

 they leave the water to spin a cocoon. 



A. Fore wing with the ground-colour white. 



a. Fore wing with brown fasciae on median nervure and 



vein 1. 



a}. Fore wing with spots on basal half of costa vocida. 



b\ Fore wing without spots on basal half of costa arborifera., 



b. Fore wing without brown fasciae. 



a^. Fore wing with two postinedial maculate bands macuUfascla. 



b^. Fore wing with postmedial series of small spots. 



a-. Fore femora orange above malayensis. 



b^. Fore femora crimson above vestalis. 



c^. Fore wing without markings albescens. 



B. Fore wing with the ground-colour orange extensa. 



C. Fore wing pale brownish ochreous simplex. 



D. Fore wing brown or blackish. 



a. Fore wing without transverse lines or series of spots. 

 a}. Fore wing fuscous. 



a?. Fore wing with the costal edge fulvous fivmipennis. 



W'. Fore wing with ochreous spots on costa beyond 



middle venosa. 



b\ Fore wing pale brown, with white streaks on the 



veins surgens. 



h. Fore wing with two obscure postmedial lines. 



a^. Fore wing pale rufous ; the anal tuft white laboulheni. 



b\ Fore wing dark rufous ; the anal tuft fulvous burmeisterl. 



c\ Fore wing black-brown ; the anal tuft black-brown . bilinea. 



c. Fore wing with obscure maculate subterminal line. 



a\ Fore wing with tbe disk whitish on underside ; hind 

 wing with the inner area not clothed with orange 

 hair juruana. 



b^. Fore wing with the disk brown on underside ; hind 



wing with the inner area clothed with orange hair . azoU<e. 



d. Fore wing red-brown with series of black spots brevetL 



