356 MR. WILLIAM SCHAUS ON 



curved streak on basal half of costa ; the subcostal and median 

 broadly shaded witli black ; the marginal white spots larger. 



2 . The markings on fore wings reduced, except the marginal 

 spots; the hind wings reddish brown, the costa with only a black 

 shade medially ; the marginal spots larger, yellow, irrorated with 

 I'eddish. Underneath similar to the male. 



Expanse, d" 60 mm., $ 65 mm. 



Bah. Carillo. 



The fore wings are like A. dismorphites Btl., the liind wings like 

 A. nigrescens G. & S. All these forms will no donbt be found to 

 gradually intergrade. The males are difficult to capture, flying 

 very high in a circle, and rarely settling. 



In British Museum. 



PlERIS LIMONA, Sp. n. (PI. LII. fig. 5.) 



S . Antennee black tipped with white. Head and thorax 

 fuscous, the latter clothed behind with white hairs. Palpi white, 

 the third joint streaked with black. Abdomen fuscous grey 

 above, whitish below. Wings white, the veins broadly edged 

 with chalky white. Fore wings : a fuscous grey streak on basal 

 third of costa ; a small black spot on discocellular ; apex narrowly 

 black ; marginal fuscous shades, not reaching tornus. Hind 

 Avings : cilia black. Fore wdngs below : a laige black spot on 

 discocellular; apex greyish. Hind wings below yellowish white, 

 the veins dark. 



$ . Fore wings above with a large black spot on discocellular, 

 and a fuscous streak in cell at subcostal I'eaching it ; the apex and 

 termen more broadly black, its inner edge somewhat lunular ; 

 underneath the black margin I'eplaced by a pale lilacine grey 

 shade. Hind wdngs below lilacine white, the veins brown ; a 

 postmedial brownish shade just beyond cell across veins 3 and 4. 



Expanse, S 75 mm., $ 78 mm. 



Hab. Limon. 



Near P. diana Feld. 



In British Museum. 



ACMEPTERON POASINA, Sp. n. (PL LII. fig. 3.) 



(5 . Antennae black. Palpi grey. Head and collar dark brown. 

 Thorax and abdomen fuscous irrorated with white. Foi'e wings 

 black; median, fold, submedian, and vein 2 all basally streaked 

 with white ; spots lilacine white ; a medial streak on costa, spot 

 beyond cell, an outer spot above vein 3, and one on costa, also a 

 small subterminal spot above 6 ; sometimes traces of spots on 

 either side of upper discocellular ; cilia greyish brown. Hind 

 wings iridescent silky brown with a large medial dull bx'own 

 spot ; from cell behind to inner margin and termen at vein 5 

 black, crossed by a grey fascia ; cilia yellow. Wings below as in 

 A. cinerascens Salv., but the markings all more intense, the anal 

 angle aiid inner margin bright yellow crossed by piu'ple-brown 

 strise. 



