( 359 ) 



wing. The hindmargin of hindwings is straiglit, thougli crenulated, from anal 

 angle to vein 4. It may be distinguished by the obliqueness of the markings and 

 the shape of the discal spot of hindwings, and more especially by the baseward 

 projection in cell of the middle and outer lines. Pisoraca penumbrata Warr. from 

 S. Celebes and Pisoraca sordidata AVarr. from New Guinea both resemble the 

 species superficial 1)'. 



50. Perixera tenuilinea sp. nov. 



Forewings : ochreous, finely dusted with reddish grey ; the lines very concise, 

 almost exactly as in Plocucha post/wsita and Crypaiplocia pulvinaris, the basal' 

 and outer marked with dark vein-dots, the outer still nearer hindmargin than in 

 ('. puln'/iaris, the two submarginal shades narrower ; a small dark cell-spot. 



Uinduings : the same ; but the cell-sjiot small, oval. 



Underside with the upper basal half of forewings rosy tinged ; the outer line 

 and marginal spots of forewings also reddish. Head, thorax, and abdomen like 

 wings ; palpi above and upper half of face red ; lower half of face white ; forelegs 

 tinged with rosy. 



Expanse of wiugs : 30 mm. 



One S from Guadalcanar, Solomon Islands, April — May 1901 (Meek). 



The great sni)erficial resemblance between this- insect and the two above- 

 mentioned, which are described in this paper, is very remarkable. 



51. Plocucha postposita sp. nov. 



Very close to P. cristatn Warr., described from a specimen from Tugela, and 

 occurring also, like the present species, in Guadalcanar, Solomon Islands. The 

 markings are practically the same in both species, but less strongly marked in 

 postposita ; the points on the lines and the marginal dots are red-brown instead 

 of black. The main difference consists in the position and size of the costal flap : 

 in crixtatit the flap is large, with the inner lobe black, and is placed in the middle 

 or ratlier before tlie middle of the costa, which is conspicuously shouldered at the 

 beginning of the flap ; in postposita the costa is straight throughout, the flaji is 

 smaller, with the inner lobe red-brown, and jilaced beyond the middle, occupying 

 the third fourth of the costa, its outer edge touching tiie outer line ; while in 

 cristuta the outer edge touches the median line. On the underside both wings 

 in postposita are rosy tinged ; iu cristata they remain ochreous ; the front of 

 thorax and basal belt of abdomen are red-brown instead of black. 



Expanse of wings : 30 mm. /'. cristata expands 35 mm. 



Four di, one ? from Guadalcanar, Solomon Islands, April and May 1901 

 (Meek). 



The ?, somewhat worn, is without the dark scales that characterise the costa 

 of the cT. 



52. Problepsiodes lucifimbria sp. nov. 



Forewings : cream-white ; costa blackish grey from base to middle ; a small 

 ochreous ear-shaped discal mark, with a slight ochreous blotch on inner margin 

 below it, both silver-spangled, the centre of the discal mark empty ; a curved 

 post-median ochreous shade, succeeded by a curved series of distinct grey lunules, 



