102 IXSECTA SAUNDERSTANA. 



is white ; the tawny hue also passes into white, where it widens towards 

 the hind border adjoining the baud ; wing-ribs and veins pitchy, the latter 

 black ill the darker parts of the wing ; poisers black. Length of the body 

 8 lines ; of the wings 18 lines. 



Brazil. 



EUARMOSTUS, n. g. 



Alis areoloB posticee quatuor ; la margine ]iosteriore 2a angustior 3a 

 latior; 4a 2a multo latior ; areola la inferior aperta, angusta. 



Face clothed with a thick tuft of hairs : legs short and stout ; fore- 

 shanks without tip-spines : wings short : base of the fork, which includes 

 the middle subraarginal areolet, equally distant from the tip of the wing 

 and from the junction of the cross- vein ; four posterior areolets ; the first 

 narrower on the hind border than the second, but broader than the third ; 

 fourth much broader than the second ; first inferior areolet open, narrow. 



EuARMosTus BiMACULA, Plate 4, fig. 1. 



Mas. Nigra, fusco tecta, abdominis basi lateribus fulvo fasciculatis, seg- 

 mentorum marginibus pnsticis fulvis, antennis basi pedibusque nigris, 

 tarsis basi tibiisque piceis, alis limpidis fusco bimaculatis. 



Body black with a brown covering : head thickly clothed above with 

 black hairs aud beneath with hoary hairs ; face adorned with a thick tuft 

 of tawny hairs : eyes bronze, parted above by a broad interval ; fore part 

 flat, composed of large facets : sucker black, stout, clothed with black hairs : 

 first and second joints of the feelers black, beset with black bristles : chest 

 and breast clothed with black hairs : abdomen tapering from the base to 

 the tip, narrower and very much longer than the chest, thinly clothed with 

 dull, pale tawny hairs, which form a tuft on each side of the base ; hind 

 borders of the segments dull, pale tawny : legs black, clothed with black 

 hairs, beset with black bristles ; feet towards the base and shanks pitchy : 

 wings colourless, adorned with two dark brown spots ; the first very large, 

 resting on the fore border and approaching very near to the tip, and to the 

 adjoining hind border; the second smaller on the hind border at half the 

 length of the wing ; wing-ribs pitchy ; veins black, pitchy towards the 

 base ; poisers tawny, with pitchy knobs. Length of the body 5 lines ; of 

 the wings 8 lines. 



North America. 



