Heterocera from Costa Rica. 179 



median black band suffusing with the more broadly black 

 inner margin at tornus ; tiie apex broadly black, especially 

 above vein 5. Hind wings : the outer margin narrowly 

 black, the apex broadly black. Underneath with a crimson 

 spot at base o£ both wings. 



Expanse 29 mm. 



Hab. Sixola, Banana River. 



Saurita diffusa, sp. n. 



c? . Antennse and body black ; metallic-green patches on 

 frons, behind antennas, on tegulae, metathorax, and lateral 

 and sublateral spots on abdomen ; shoulders crimson ; a 

 dorsal crimson spot on base of abdomen ; fore coxte metallic 

 green. Fore wings blackish brown, the veins black. Hind 

 wings very broad, black ; the costal margin broadly dark 

 greyish bu£F. 



Expanse 29 mm. 



The female similar, but rather lighter brown ; the hind 

 wings normal, fuscous. 



Expanse 30 mm. 



Hab. Juan Vinas, El Sitio, Tuis. 



Saurita suhnacula, sp. n. 



Antennae black. Body and wings dark brown ; a few 

 blue scales on frons, on tegulae outwardly, and on meso- 

 thorax ; a large crimson spot on patagia. Fore wings : some 

 blue scales at base of costa and cell. Hind wings : a buff 

 streak and a small patch of roseate scales at base below cell. 

 Wings below : a red space at base of hind wings, narrower 

 below cell and not reaching inner margin. 



Expanse 36 mm. 



Hab, La Laguna. 



Argyrosides notha, sp. n. 



Antennae, head, collar, thorax, and first segment of abdo- 

 men black ; frons white. Abdomen : second segment 

 constricted, unsealed, otherwise dark brownish green above; 

 laterally roseate, meeting ventrally on last two segments ; 

 roseate band ventrally on segments 3-5 ; segments 1 and 2 

 white below. Thorax below and legs black ; femora and 

 some lateral spots white ; a crimson streak on fore tibise. 

 Wings hyaline; the veins and margins narrowly black. 

 Fore wings : a l)yaline streak at base of costal margin ; a 

 crimson basal spot; a small crimson spot terminally below 



12* 



