MACROLEPIDOPTERA 175 



triangular, termen somewhat bowed, oblique ; brown, strigulated with dark fuscous ; 

 first and second lines cloudy, fuscous, marked with dark fuscous dots on veins, first 

 moderately curved towards costa, second curved outwards on upper f , rather sinuate 

 inwards towards dorsum ; median shade thick, rather dark fuscous, sinuate ; an ill- 

 defined dark discal dot before this ; a cloudy rather dark fuscous praesubterminal shade. 

 Hindwings with termen moderately waved ; colour and markings as in forewings, but 

 first line absent, median and second lines little curved, more cloudy, praesubterminal 

 little marked. 



Mr Perkins obtained no specimens of this form ; I have described the type in the 

 British Museum collection, from Haleakala, Maui, at 4000 feet. There should have 

 been a second specimen in Mr Blackburn's collection, but it seems to have been lost. 

 The type is a partially deformed female, but there is no doubt of its distinctness from 

 all others except S. aruraea ; from this it differs only by the more sinuate median and 

 second lines of the forewings, and apparently separate (though little-defined) discal dot ; 

 as the two forms are from different islands, and the other most closely allied species are 

 each apparently confined to a single island, I have thought it best (in the absence of the 

 male of corticea) to keep them as separate species until further material is available. 



(6) Scotorytlira isospora, sp. nov. 



Z%. 26 — ^36 mm. Head and thora.x in t brownish, sometimes pale-sprinkled, in 

 % light greyish-ochreous. Antennae whitish or ochreous-whitish, faintly fuscous-ringed, 

 pectinations in ^ 7 — 8, laterally blackish-lined. Abdomen in t i*. brownish, sprinkled 

 with dark fuscous, segmental margins and anal tuft ochreous-whitish, in $ pale greyish- 

 ochreous sprinkled with dark fuscous. Legs in ^ fuscous, posterior tibiae whitish- 

 mixed, somewhat dilated, enclosing an ochreous-whitish hair-pencil, in % ochreous- 

 whitish sprinkled with dark fuscous, posterior tarsi in t I- Forewings rather 

 elongate-triangular, termen faintly sinuate beneath apex, bowed, oblique, waved, in 

 % more strongly ; brownish-ochreous in ^, light greyish-ochreous in %, more or less 

 densely strigulated with dark fuscous ; first and second lines cloudy, indistinct, 

 darker, marked with dark fuscous or blackish dots on veins, first curved, second 

 waved, moderately curved, slightly sinuate inwards near dorsum ; median shade 

 broader, cloudy, somewhat sinuate, in % seldom also black-dotted on veins ; no 

 discal spot ; in ? sometimes a more or less developed broad fuscous suffusion in 

 disc posteriorly beneath median vein, extending obliquely upwards to termen 

 beneath apex. Hindwings with termen dentate ; colour and markings as in fore- 

 wings, but first line obsolete. 



28 specimens; 17 Kaholuamano, Kauai, at 4000 feet; 11 Waimea Mts., Kauai, 

 at 4000 feet ; from April to June. Differs from its nearest allies by the dentate termen 

 of hindwings, usually also by the paler colouring and more conspicuously dotted lines. 



