244 [December 



first and second median nervules arise from one point, the third further 

 removed and thus resembling the disposition of these nervules in Flalixi- 

 (lota, but the fourth ni. nervule springs from the m. nervure at about 

 the middle, hence is much further removed towards the base of the 

 wing than in Ilalisidofa. Secondaries, well-sized, with acute apices; 

 external margin evenly rounded, very slightly excavate before anal 

 angle. The third m. nervule is well removed from the point from 

 whence the first and second spring, while the fourth is greatly removed 

 towards the base of the wing. All the nervules further apart, render- 

 ing the interspaces and the entire wing relatively wider. 



Head, large and pressed against the prothoracic parts; clypeus, sub- 

 triangulate, narrowing towards the base, wider than in Halisidota. 

 Palpi, prominent, porrect, held apart, apical joints slender and short, 

 inclined forwards. Maxillas, moderate. Antenna;, rather long, finely 

 and shortly pectinate to their tips ( 9 )• Basal sockets, large and pro- 

 minent. Prothoracic, pieces narrow. Thorax, globose and elevated. 

 Abdomen stout, exceeding the secondaries; s,enitals concealed; anal 

 segment greatly and suddenly narrowed ( $ ). 



The squammation is thin and powdery, not fine and close as in Ha- 

 lisidota ; the single species is pale yellowish clay-colored, irregularly 

 sprinkled with black dots on the primaries and over thoracic region 

 above. 



Euhalisidota luxa, n. sp. (Plate 4, fig. 5. 9-) 



9 . Very pale yellowish testaceous. Primaries, marked with irregu- 

 lar and sparse black powdery dots; these are plainer on the costa and 

 form two interrupted geminate bands at basal third, of which the second 

 is irregularly continued to internal margin, while the first is apparently 

 discontinued below the median nervure. Beyond, two central black dots. 

 The apical third of the wings, irregularly and sparsely sprinkled with 

 small black dots, congregated beyond the extremity of the discal cell. 

 The ground color of the wing shows no darker shades, being unicolor- 

 ous whitish clay-color. 



Secondaries, pale testaceous, semi-transparent. The scales are laid 

 on evenly and thinly; the internal margin fringed with longer hairs. 

 No markings or shades of any kind. 



Under surface of primaries whitish testaceous, resembling upper sur- 

 face in coloration, and without markings of any kind. 



Head, and upper thoracic parts like primaries in coloration; "front" 

 with a few dark isolated scales, which do not prevent the appearance of 

 unicolorousness; "collar" with central black scales on both sides; tegulce 



