198 FAUNA HAWAIIENSIS 



Prionopteryx Steph. 



(i) Prionopteryx exonoma, sp. nov. 



$. 12 mm. Head and thorax brown. Forewings elongate, termen with a deep 

 upwards-oblique semioval excavation below middle ; 4 absent, 7 absent, 9 absent, 

 1 1 free ; brown, slightly coppery-tinged ; first and second lines fine, white, blackish- 

 edged, first preceded towards costa by broader blackish suffusion, acutely angulated 

 outwards above middle and inwards towards dorsum, between these irregular, second 

 obtusely angulated outwards above middle and inwards towards dorsum ; a median 

 blackish shade on costal half parallel to these ; a very small white wedgeshaped mark 

 on costa before apex ; four undefined dashes of blackish suffusion towards termen ; 

 cilia fuscous, with a black line interrupted on excavation, and a white basal mark 

 at apex. Hindwings with vein 4 absent ; dark grey, suffused with blackish-fuscous 

 towards termen, slightly purplish-tinged ; cilia grey, with blackish subbasal line, 

 tips whitish. (Plate V. fig. 13.) 



I specimen, Waianae Mts., Oahu, at 2000 feet, in April. Distinct by the small 

 size and peculiar neuration (which varies specifically in this genus) ; in the latter 

 character it approaches nearest the Australian P. apicistrigella, to which, however, 

 in other respects it is but little allied. 



Talis Guen. 



1. First line distinct, subsinuate (6)floricolatis. 



„ angulated near costa or obsolete 2. 



2. Forewings very elongate (Kauai species) {i) geraka. 



„ shorter 3. 



3. Forewings grey (5) hyacinthina. 



,, ochreous or brownish 4. 



4. Forewings with dark tornal spot in cilia (^ oxyptera. 



„ without such spot 5. 



5. Lines more or less distinct (j) hydrophila. 



,, absent (2) homodora. 



(i) Talis geralea, sp. nov. 



Z%- 12 — 17 mm. Palpi 5. Forewings very elongate-triangular, narrower than 

 in the other native species, apex in J* obtuse, in ? round-pointed, termen straight, 

 oblique, in $ very oblique ; brownish-ochreous or light fuscous, more or less whitish- 

 sprinkled, in % sometimes much suffused with white ; a very few scattered black scales ; 

 two dark fuscous discal dots transversely placed, sometimes faint ; second line darker, 



