MOTHS FROM DUTCH NEW GUINEA. 549 



Hind wing pale with fuscous margin, broad at apex but dis- 

 appearing at the angle ; fringes pale. 

 Exp. 24 mm. 

 Arfak Mts., 4000 ft. 



Ambia novaguinensis, sp. n. (PL LXVIII. fig. G.) 



Head, legs, antennas, palpi, and thorax brown. 



Fore wing whitish, with numerous brown mai-kings ; two ante- 

 median lines containing a white spot near the costa : a dark spot 

 at end of cell, with a white triangular centre ; an oblique line 

 running from near apex to middle of inner margin, followed by 

 a darker space containing five triangular white "spots with dark 

 outer mai'gins. 



Hind wing white, with an irregular dark median line and a 

 dark subterminal line. 



Exp. 18 mm. 



This insect has veins 4 and 5 stalked in both wings. 



Warmasin Lake, Arfak Mountains, 6000 ft. 



Margarosticha plumbealis, sp. n. (PI. LXVIII. fig. 9.) 



Head, legs, antennae, and thorax pale chestnut ; patagia white ; 

 abdomen bright chestnut, with black tuft. 



Fore wing bright chestnut, with silvery- white blotches: the 

 first is square and extends from the median nervure to the hind 

 margin, the second is triangular and near the apex ; before the 

 a.pex itself is a narrow white streak. 



Hind wing chestnut, with a broad white transverse band ; 

 beyond this is a lead-coloured round patch reaching the outer 

 margin : it is in reality black, with a number of scattered white 

 scales ; on the outer edge of this are three black dots, each having 

 a centre of chestnut, and between them silvery-white dots. 



Underside silvery, with the markings of the upper wings 

 showing through ; fringes darker. 



Exp. 22 mm. 



Arfak Mts., 4000 ft. 



New genus under sub-fam. Hydrocampina- : — 



Brevicella (type emarginata, 5 ). 



_ Palpi porrect, twice the length of head, not scaled : antenn.-e 

 simple; legs not hairy; tibise with usual spines. Hind wings 

 with long hairs on parts of the costa. 



Venation— Fore wing : 2 and 3 stalked ; 4, 5, 6, 7 from cell ; 

 9 and 10 stalked, with 8-11 present. Hind wing: 2 and 3 

 stalked slightly ; 4, 5, 6 from cell ; 7 stalked with 8. 



Brevicella emarginata, sp. n. (PI. LXVIII. fig. 8.) 

 Body and wings dark brown ; a postmedian curved line bordered 

 within by seven triangular whitish dashes ; at the upper end of 



