1865.] 



173 



corporal parts are covered with long, downy, erect squammation, which 

 is iienerally of a yellowish-sericeous color, with a greenish shade above 

 on the thoracic parts. The prebasal abdominal segments are clothed 

 with black, rigid hair; the anal segments show a slight fulvous shade 

 on the thick sericeous squammation above. The wings are largely 

 vitreous, with narrow borders. The under surface shares the charac- 

 teristic, downy squammation. The legs are finely scaled, slender, with 

 two nearly ecjual spurs at the base of the middle tibia}. The species 

 form two groups. The first comprises S. fuci/ormis and *S'. dijfinis, in 

 which the borders of the wings are vei'y narrow and the discal cell is 

 free and naked. The second comprises S. iomhyliformis, in which the 

 wider borders are dark dull reddish-brown ; the discal cell traversed 

 longitudinally by an almost imperceptible linear thickening of the tegu- 

 ment, covered by distinct scales, which latter appear as if covering a 

 longitudinal vein. 



H.5;MaRRHAGIA, nov. gen. 

 When we compare aSV.sh^ tliijshe. Fab., and allied species with the 

 species of Si'xia, as above restricted, we meet but the character of the 

 vitreous wings, though that itself somewhat modified, to authorize their 

 congenerical association. The head, in ♦S' fhi/afjc Fab. and allies, is much 

 flattened above; the closely sealed palpi extending beyond the sloping 

 clypeus. Antennae long and stout, gradually narrowing to base. The 

 epicranium is broad behind. The prothoracic parts are well produced 

 before the insertion of the primaries, and slope in front toward the 

 caputal base. The wings are large and acuminate; in the typical spe- 

 cies the apex is much produced, the external margin very oblique and 

 quite uneven, not rounded. The hind wings are large and broad, be- 

 ing well developed posteriorly. The abdomen is long and rather stout, 

 anal segments slightly and gradually contracting. The squammation 

 is very distinctive and nui ffe urn's. The corporal parts are clothed with 

 even, rather sparse, appressed hairs, which lie closely to the surfiice. 

 The coloration is rich claret brown ; the head, thoracic parts and basal 

 abdominal segments, above, are of difi'crent shades of green. The wings 

 are broadly margined and are more or less intensely reddish-brown; 

 the tegument at internal margin and anal angle of posterior wings is 

 much exaggerated and tliickly covered with scales. The under surface 

 of the body is covered with short appressed squammatioi;, whitish on 

 the under surface of palpi, thoracic region and legs, the latter with two 

 very unequal spurs at the base of middle tibifc. The species are evi^.-:^ . p -j^ 

 dently allied to Arllapos tliibner, and form an intermediate poaJiJi^^L"!^,^ 



uj( LIBRARY 



