South American Micro-Lepidoptera. 2G9 



of fore-wings absent, the other nine exhibiting the normal 

 structure of the genus. In other respects the species 

 accords well with Zalithia and not with Slrobisia. Strobisia 

 Walkeri, Wals., is a nearly allied species, differing in the 

 postmedian markings. 



Zalithia callichroma, n. sp. 



cJ 5. 12-13 mm. Head clco|) glossy indigo-blue, collar yellow. 

 Palpi yellow, anterior edge of terminal joint blackish. Antennae 

 blackish, apical f white except tip. Thorax deep metallic gmn\ 

 with purple reflections. Abdomen dark fuscous, segmental margins 

 in $ suffused with deep orange. Fore-wings elongate, narrow, costa 

 hardly arched, apex obtuse, termen obli(juely rounded; black; 

 base narrowly metallie-blue-grcen, extended as a thick streak along 

 dorsum to middle; slender interrupted yellow transverse streaks 

 between this streak and costa at ^ and before middle, and space 

 between them traversed by a yellow costal line and subcostal and 

 median streaks, alternating Avith narrow metallic- blue-green finely 

 black-edged streaks, the yellow subcostal streak divided by a fine 

 black lino ; a slender violet-leaden transverse median fascia, narrowly 

 edged with black ground-colour, considerably expanded posteriorly 

 beneath but not quite reaching dorsum ; wing beyond this wholly 

 orange-red, except a yellow wedge-shaped mark on costa beyond 

 median fascia, and a bright purple triangular patch extending over 

 termen with its apex reaching inwards in disc nearly to fascia : 

 cilia dark fuscous with coppery reflections. Hind-wings dark 

 fuscous, in <J sometimes tinged with orange towards subdorsal 

 area, in $ with anterior f of wing more or less wholly orange ; cilia 

 dark fuscous. 



British Guiana, Bartica, from January to April 

 {Parish) ; eleven specimens. 



Zalithia sandaracota, n. sp. 



$. 1.5 mm. Head deep indigo-blue, collar yellow on sides. 

 Palpi yellow, anteriorly blackish on terminal joint and upper part 

 of second. Antennae purple-blackish, apical half white except 

 towards apex. Thorax metallic-green, with purple reflections. 

 Abdomen dark fuscous, segmental margins orange-ochreous. Fore- 

 wings elongate, narrow, costa nearly straight, slightly arched 

 posteriorly, apex obtuse, termen very obliquely rounded ; black ; 

 base narrowly metallic-blue-green, extended as a thick streak along 

 dorsum to middle; interrupted yellow transverse streaks between 



