XyL0UYCTJDJ3. 417 



Stenoma zanclogramma, n. sp. 

 2 . 17 mra. Head wliite, crown tinged with grey posteriorly. 

 Palpi white, second joint infiiscated on basal |, base of terminal 

 joint fuscous. Thorax light ochreons-grey, shoulders suffused with 

 whitish, posterior | suffused with dark grey. Abdomen grey- 

 whitish. Forewings elongate, rather narrow, costa anteriorly 

 moderately, posteriorly slightly arched, ap-.x rounded, termen 

 rounded, somewhat oblique; 2 separate; white; a small grey 

 mark on base of costa ; a fuscous longitudinal median line from 

 base to ^ ; an elongate patch of dark grey suflusiou extending 

 along dorsum from base to middle; a trapezoidal dark fuscous 

 blotch on dorsum beyond middle, reaching half across wing ; a 

 straight very oblique dark fuscous line from costa before middle 

 almost reaching posterior angle of this ; a dark fuscous line from 

 before | of costa to near middle of termen, thenco strongly curved 

 round to tornus, space between lower part of this and preceding 

 blotch suffused with grey ; three bilobed black marginal marks 

 round apex, a black dot above and two below these : cilia white, 

 with faint grey subbasal line, and grey ajjical and tornal patches. 

 Hindwings with 3 and 4 stalked^ 5 api)roximated j pale grey, apex 

 whitisli-tinged, with two or three dark fuscous marginal marks ; 

 cilia white, with light grey subbasal shade. 



British Guiana, Bartica, in January (Parish) ; one specimen. 

 Allied to the preceding, and therefore the c? may have similar 

 characters ; in this genus the secondary sexual characters are good 

 indications of affinity, and conversely allied species may be expected 

 to exhibit analogous structures. 



Stenoma tribomias, n. sp. 

 5.19 mm. Head white, crown tinged with ochreous posteriorly. 

 Palpi white, second joint with fuscous streak on basal half. Thorax 

 dark fuscous, anterior margin and most of patagia whitish. Abdo- 

 men whitish. Forewings elongate, rather narrow, costa anteriorly 

 moderately, then slightly arched, apex rounded, termen rounded, 

 nearly vertical ; 2 connate with 3, anastomosing with 1 c ; ochreous- 

 white ; a transverse dark fuscous mark from base of costa, almost 

 connected with a slender dark fuscous longitudinal median streak 

 from near base to 5 ; three dark fuscous rectangular dorsal blotches, 

 interspaces pale brownish, first extending from base to |, narrowed 

 basally, second from g to beyond middle, reaching half across wing, 

 third from | to tornus, reaching somewhat more than half across 

 wing ; a small dark fuscous spot above middle of wing, and a 

 larger elongate one beyond and somewhat below it; a dark fuscous 

 line from | of costa to posterior angle of third dorsal blotch ; six 

 dark fuscous marginal dots round apex and termen : cilia whitish, 

 with fuscous subbasal shade. Hindwings with 3 and 4 coin cident, 

 5 nearly approximated ; whitish, with some faint greyish sufFuiloii 

 before apex and towards middle of termen ; cilia white, basal third 

 ocTireous-tinged. 



Brixish Guiana, Bartica, in December (Parish) ; one specimen, 

 VOL. I. — October 1915. 2 e 



