( 404 ) 



Hindwiiig : kite-shaped ; LiuJmargin angled at vein 4 and crenulate. 



Auteuuae of S bipei-tinate for three-fonrtlis ; palpi porrcct, the second segment 

 ronghly haired, third si)atulat,e, drooping, at right angles with second ; tongne and 

 frenulum present; hindtibiae not swollen, with four spurs. 



Neurafion : furewing, cell not quite half as long as wing : discocellular angled, 

 both upper and lower arms obli(jue ; (irst median nervnle at tive-eighths, second 

 close til third; radials normal; 7, 8, 'J, id, 11 stalked from before end of 

 cell, 8 and ti compressed and approximated, 10 and 11 coinei<lent, anastomosing 

 with 12 and separating afterwards : hindwiiig, costal and subcostal quite shortly 

 approxiiuated near base; 0, 7, and '■'>■, 4 from angles of cell. Nu fovea in forewing. 



Type : Mcsothi.ta Jiacciihi spec. nov. 



The species partake of the characters of Semiothi^a on the one hand and 

 Uypomlra on the other, being more akin to the latter. 



57. Mesothisa flaccida spec. nov. 



Forewimi : ochreons striated with pale brown, with which colour the costal half 

 of wing is slightly sutfuscd ; lines dilfuse, grey ; lirst from one-sixth of costa to one- 

 third of inner margin, oblique outwards and faint to median, then vertical and broad ; 

 outer line (in the single specimen) very indistinct, but marked by brown dots on 

 veins and accompanied by a grey shade, ajiparently oblique outwards from before 

 apex, acutely angled on vein 7, then oblique inwards to three-fourths of inner 

 margin ; a small black cell-spot ; fringe worn ; a dark cloud along margin from 

 apex to vein 4. 



HindwiiKj : with a thick waved grey-brown outer line straight from before 

 costa to anal angle, continuing the outer line of forewing ; cell-spot dark, preceded 

 by a faint inner diffuse band ; the margin before anal angle thickly striated and 

 browner. 



Underside paler, with the markings rather clearer. 



Head, thorax, and abdomen ochreons ; face white with black scales; tijis of 

 palpi darker. 



Expanse of wings : 40 mm. 



1 <S from Sierra Leone. 



ys. Mesothisa gracililinea sjiec. nov. 



Forewing : pale ochreous, slightly washed with darker, and dusted with brown 

 atoms ; the lines fine, pale brown ; first from one-fifth of costa to one-third of 

 inner margin, angled outwards above and below median vein ; outer line at four- 

 tifths, starting from a pale brown costal spot, bluntly bent on vein 7, then straight, 

 with a faint bend outwards on vein 3, to inner margin close to anal angle ; median 

 shade dill'use and obscure, sinuous, well curved outwards above middle; cell-spot 

 black, of raised scales ; fringe brown. 



Uiiulwimj : like forewing, but without first line, the outer line straight. 



Underside with the ground-colour warmer ochreons, the speckling browner, 

 the lines more distinct ; forewing with a second line, not seen above, at two-thirds, 

 angled acutely on vein 7, then sirongly incurved and all but louchiiig outer line 

 on submedian fold ; inner margin whitish ; the cell-sjiots dark in a pale .space ; 

 truces of a submarginal line. 



