NO. 1156. NEW GEOMETRID MOTHS— WARREN. " 465 



TRICENTRA IGNEFUMOSA, new species. 



Foreuring. — With a broad costal streak and outer third of wing olive; 

 the rest of wing to three-fourths of inner margin and as far as the 

 cell-fold deep red, edged outwardly by a thick dark shade; base of 

 costa deep purple; the three lines purple, first oblique outward from 

 one-sixth of costa, outcurved above and below median, to one-third of 

 inner margin, the inclosed space deeper red; postmedian and submar- 

 ginal lines dentate- lunulate, parallel, outcurved above and incurved to 

 vein 2, thence vertical; a small white dot at lower end of discocellular; 

 fringe yellow, slightly tinging the outer margin. 



Illndiring. — With the whole basal half red, its outside edge darkened 

 by two thick nearly coalescent black lines; the extreme base deeper 

 red; cell mark angulated, yellow, wider at extremities than in middle; 

 rest of wing olive; fringe yellow. 



Under side smooth pinkish white, the forewing sutiused with dull 

 purple; a postmedian thick median shade across each wing, blackish, 

 tinged with vinous; fringes yellow. 



Head, thorax, and basal half of abdomen red; anal half olive; under 

 side and legs pinkish ochreous; forelegs red. 



Expanse of wings. — 17 mm. 



Locality. — St. Laurent, Maroni River, French Guiana, November, 

 1904. 



7i/;?t.— Cat. No. 9276, U.S.N.M. 



TRICENTRA PERCROCEA, new species. 



Foreuiing. — Golden yellow, speckled with reddish brown scales; the 

 base and apex above middle sufi'used with red-brown; basal lines very 

 obscure, outcurved at one-third; the two outer lines from three-tifths 

 and three-fourths of costa to two- thirds and five-sixths of inner margin, 

 respectively, both strongly dentate, but the inner of the two obscurely 

 marked, except be3'ond cell, where it bears two large teeth more or 

 less confluent into a blotch; an interrupted dark marginal line; fringe 

 yellow, with a black blotch at vein 4. 



Ilindv^ing. — Yellow; only the sulimarginal line marked, the area 

 beyond it dusted with olive scales; on the discocellular two single rings 

 of purplish scales; fringe pale yellow, dusted with gray toward apex. 



Under side pale yellow; upper half of forewing dull rosy; the dark 

 blotch in postmedian line square and prominently darker, running out 

 into the dark spot in fringe. 



Head, thorax, and abdomen deep j^ellow, varied with red: collar 

 vertex, upper part of face, and palpi reddish; third segment of 

 abdomen marked with red-brown. 



Expanse of vnngs. — 16 mm. 



Locality. — St. Jean, Maroni River, French Guiana; March, 19U4, 



Proc. N. M. vol. XXX— 06 30 



