of the Australian Pyralidina. 289 



wings with 8 and 9 stalked, 10 absent, 11 short. Hind winga 

 somewhat broader than fore wings ; 3,4,5 remote ; 6 from angle, 

 7 from considerably before angle, anastomosing with 8 from very 

 near origin to one-third ; transverse vein very faint. Lower 

 median of hind wings not pectinated. 



The species are neatly and elegantly marked. Besides 

 the four given below I am only acquainted with one 

 other, Isopteryx acclaralis, Walk., 403 ; it is represented 

 by a single type in the British Museum, of which I 

 cannot investigate the structure, but evidently referable 

 here, and closely allied to M. nitidalis, from which it 

 may be easiest distinguished by the first line forming a 

 conspicuous round white spot on fold, and by the white 

 discal lunule being notably nearer base ; the locality is 

 given as Ceylon. The larvae probably all feed on ferns. 



A. Fore wings with upper half of second line curved 



outwards . . . . . . . . . . . . aduncalis. 



B. Fore wings with upper half of second line curved 



inwards or straight. 



1. Wliite discal spot divided into two small round 



dots . . . . . . . . . . . . . . nitidalis. 



2. White discal spot single, transverse. 



a. Second line of fore wings forming an acute angle 



below middle . . . . . . . . . . ocUropteralis. 



b. Second line of fore wings obtusely bent in 



middle acrias. 



Musotima aduncalis, Feld. 

 Diathrausta aduncalis, Feld., Eeis. Nov., cxxxv., 11. 

 Variable in colour from white to ochreous-yellow. 

 Auckland, New Zealand ; three specimens in January. 



Musotima acrias, n. s. 

 (? , 5 , 17 — 18 mm. Head and thorax whitish ochreous, suffused 

 with reddish ochreous. Palpi pale whitish ochreous, base and apex 

 of 2nd joint reddish ochreous. Antennae whitish ochreous. Abdo- 

 men whitish, mixed with ochreous. Legs ochreous-whitish, tibiae 

 irrorated with ochreous-fuscous. Fore wings moderate, triangular, 

 in female more elongate, costa slightly arched, apex tolerably 

 rectangular, hind margin somewhat oblique, waved, sinuate below 

 costa so as to project obtusely m middle, rounded beneath ; whitish 

 ochreous, mixed and suffused with reddish ochreous, with some 

 scattered fuscous scales ; a very small blackish spot on inner 

 margin near base, and another in disc obliquely beyond it, both 



