XYLORYCTin.E. 451 



costal edge whitish ; short very fine ochreous-whitish lines from 

 base ia middle and on fold : cilia whitish. Hindwings with 3 and 



4 coincident, 5 connate ; grey ; cilia whitish-grey, towards base 

 light grey. 



British Guiana, Mallali, in March (Parish); three specimens. 

 Closely allied to the preceding and following species, notwith- 

 standing the different ueuration. 



Stenoma thymiota, n. sp. 



d 2 • 15-16 mm. Head whitish-ochreous, sidetufta somewhat 

 marked anteriorly with violet-fuscous suff'usion. Palpi ochreous- 

 wliitish, second joint grey except towards apex, terminal joint 

 with basal and supramedian dark fuscous rings. Antennal cilia- 

 tions of J 3. Thorax dark violet-grey, shoulders narrowly whitish- 

 yellowish. Abdomen grey. Fore wings elongate, costa anteriorly 

 moderately, posteriorly gently arched, apex rounded-obtuse, termen 

 rounded, rather oblique; 2 separate; dark violet-grey ; costal edge 

 whitish-yellowish ; plical and second discal stigmata moderate, 

 blackish ; nine blackish marginal dots round apex and termen : 

 cilia ochreous-whitish. Hindwings with 3 and 4 short-stalked, 



5 approximated ; rather dark grey ; cilia light grey, darker towards 

 base. 



British Guiana, Bartica and ]\[allali, from January to March 

 (Parish) ; five specimens. 



Stenoma atmodes, n. sp. 



5 . 18 mm. Head whitish-ochreous. Palpi ochreous-whitish, 

 second joint grey except apex, terminal joint with dark fuscous 

 basal and supramedian rings. Thorax dark purple-gi-ey, shoulders 

 whitish-ochreous. Abdomen dark grey. Eorewings elongate- 

 oblong, eosta anteriorly moderately, posteriorly gently arched, 

 apex rounded, termen rounded, somewhat oblique ; 2 separate ; 

 dark purple-grey ; extreme costal edge ochreous-whitish ; a wedge- 

 shaped whitish-ochreous spot on base of costa ; stigmata dark 

 fuscous, plical obliquely beyond first discal ; eight blackish marginal 

 dots round apex and termen, preceded by obscure cloudy ochreous- 

 whitish dots or marks: cilia ochreous-whitish. Hindwings with 

 3 and 4 short-stalked, 5 approximated ; dark fuscous ; cilia grey, 



Peru, Pacaya, in June (Mounsey); one specimen. 



Stenoma periphrictis, n. sp. 

 5 . 18 mm. Head and thorax grey, face white. Palpi whitish, 

 second joint grey except towards apex, terminal joint with base 

 and anterior suff'usion except towards base and apex dark fuscous. 

 Abdomen grey. Forewings elongate, costa anteriorly moderately, 

 posteriorly slightly arched, apex rounded, termen rounded, vertical ; 

 2 approximated to 1 c ; glossy grey ; extreme costal edge whitish, 

 passing into a fine waved whitish line running round apes and 

 termen ; a cloudv somewhat darker spot on end of cell, and a 



2g2 



