( 498 ) 



and double to inner margin at three-fourths ; an iuterrujited snbmarginal Hue 

 of striae ; marginal line fine, dark ; fringe white. 



Ilindiriiiq : with the lower part of outer line and the sulnnarginal line of streaks; 

 marginal line black, iuterrujited at the lobe : two round blaok spots, one marginal 

 in the tooth at the end of vein 3, the other subraargiual between veins 2 and 3. 



Underside all wliite. 



Head, thorax, and abdomen white ; face and jialpi black. 



Expanse of wiugs : 37 mm. 



1 <? from Huancabamba, Cerro de Pasco, Peru, OUUO to 1U,UUU ft. (Bottger). 

 Distinguished from Meleaba theclaria AVlk., to which it bears a great resemblance, 

 by the antennae, wliich are shortly serrate-clavate instead of slenderly bipectinate. 



Trotorhombia gen. nov. 



Forewing : costa well arched, especially towards ajiex, which is depressed ; 

 hindraargin shortly vertical from vein 8 to 7, then excised to vein 4, thence straight 

 and oblique ; inner margin straight ; anal angle well marked. 



Hindwing : with ape.x rectangular and hindmargin straight to vein 4, then 

 forming an oblong projection from 4 to 3, the lower end of which is produced 

 into a tooth pointing inwards ; the margin twice excavated to anal angle, forming 

 another tooth between the excavations on vein 1 ; inner margin about half as long 

 as hindmargin, the whole wing roughly rhomboid. 



Antennae of c? unipectinate, the pectinations thickened at their apex, abbre- 

 viated at each end of the shaft ; palpi porrect, the third joint sjiatulate, smooth- 

 scaled and distinct ; tongue small ; frenulum very fine ; hindtibia with four unequal 

 spurs. 



Neuration : forewing, cell less than half of wing ; discocellnlar vertical, bnt 

 oblique below ; vein 2 at two-thirds, 3 close before 4 ; 5 from top end of cell, 

 whence also the stem of 6, 7 ; 8, 9 stalked; 10, 11 free : hindwing with 3, 4 

 stalked. 



Type : Trotorhombia metachromata Wlk. (Erosia). 



Family GEOMETRIDAE. 



Subfamily OENOCHROMINAE. 



11. Pycnoneura convergens spec. nov. 



Foreiving : shining white; the markings olive-grey; these are all straight 

 and oblique, converging, in direction, towards the apes ; a broadish streak at 

 one-fourth, a broader one from middle of inner margin, with a fine line on each 

 side, and two broadish, slightly wavy, submarginal streaks; fringe brown, with 

 black spots at base between veins in upper half of margin ; costa brownish iu 

 basal half. 



lliiiiliring : with all the linos and streaks thicker and plainer; no marginal 

 spots. 



Underside uniform satiny white. 



Head dark brown ; thorax and abdomen white. 



Expanse of wings : 44 mm. 



1 (J from Oroya, Inambari, 3UU0 m., April 1901, dry season (Ockenden). 



