Mr, R. M'Lachlan on Anisocentropaa, 5cc. 493 



length of the wings, thread-like, basal joint short, bulbous, a tuft 

 of hairs is placed on the underside between the basal joint and the 

 eye; maxillary palpi very long, hairy, not differing in the sexes; 

 1st and 2nd joints shorty of equal length, 3rd longer than the 1st 

 and 2nd united, 4th half the length of the 3rd, terminal joint 

 about as long as the 3rd, flexible; labial palpi small, the joints 

 of about equal length. 



Prothorax small, much narrower than the head ; mesothorax 

 oval-elongate, broader than the head and flattened above; abdomen 

 not robust. 



Legs : femora thin, sub-compressed ; tibiae cylindrical, the pos- 

 terior tibiae and tarsi always more or less hairy. Spurs 2. 4. 3 ; 

 anterior tibiae with two small spurs at the apex ; intermediate 

 tibiffi with two spurs at the apex and two in the middle, the outer 

 spurs in each pair long ; posterior tibiae with one long spur in the 

 middle and two unequal ones at the apex. 



Wings rather thickly clothed with short adpressed pubescence : 

 anterior wings short and broad, dilated at the apex, which is 

 obliquely rounded ; discoidal cell closed ; anastomosis complete, 

 but very irregular ; the two apical cells formed by the furcations 

 of the two branches of the ramus disco'idalis, very long; posterior 

 wings much smaller than the anterior, folded. 



In the two American species the hairy covering on the wings 

 is thicker than in the others. 



Anisocentropus illusiris, n. sp. (PI. XIX. fig. 1.) 



Fuscus, nitidus, sparse ochraceo-pilosus : antennis nigro-fuscis, 



supra albo-maculatis, infra brunneis, articulo basali ochraceo ; 



capite nitido nigro-fusco ; penicillo ochraceo ; palpis maxilla- 



ribus ochraceis, articulo ultimo fusco ; mesothorace nitido 



fusco, maculd medid nigro-fusca ochraceo-marginata; ab- 



domine supra fusco, infra vix ochraceo; pedibus anticis 



omnino ochraceis, tibiis tarsisque intermediis et posticis fuscis, 



his valde hirsutis ; alls anticis nitidis, purpurascenteo-fuscis, 



bases versus vix ochraceis, strigis maculisque ante medium 



cyaneis ; fascid media cuneiformi albido-ochracea angulum 



analem non attingente ; posticis fuscis. 



Long. Corp. 4| lin. ; long, antenn. 10 lin. ; exp. alar. 13 lin. 



Antennae blackish-fuscous, the joints above spotted with white, 



not distinctly annulated, beneath wholly brownish, basal joint 



ochreous ; head above shining blackish-fuscous, with scattered 



ochreous hairs, the pencil-like tufts ochreous ; maxillary palpi 



ochreous, terminal joint fuscous ; prothorax ochreous, hairy ; 



