279 



bluish scales in a more or less fuscous streak between apex and 

 end of third dorsal white streak; cilia whitish, at apex terminally 

 fuscous, at tornus fuscous at base also. Hindwings and cilia greyish- 

 fuscous. Abdomen greyish-fuscous. Legs fuscous with white tarsal 

 spots. 



Hab. Pacific Heights Ridge, Oahii, Aug., Sept., 1909; 

 Hillebrand's Glen, Oalui, Dec, 1912; Mt. Olympus, Oaliu, 

 Jan., 1913; numerous specimens reared from mines in leaves 

 of Duhaidia plantaginca. 



The eggs are deposited singly on the surface of the leaves; 

 circular, about .5 mm. in diameter, broadly convex and with the 

 surface reticulated and somewhat irridescent. The young larva 

 on hatching, immediately eats into the leaf, at first producing a 

 very slender mine lengthwise in the leaf and back and forth a 

 few times, but eventually broadening to a blotch. A purplish 

 discoloration is produced in the leaf by the mining larva, form- 

 ing streaks following the course of the mines. Often several 

 mines are begun in the same leaf. I have found as many as 11, 

 but not all of the larvae reach maturity, however, often 3 or 4 

 cocoons are found in the same leaf. 



The full-grown larva is 6-7 mm. long; pale greenish-yellow, 

 head pale brownish, eyes black; head very deeply notched and 

 retracted into segment 2 which is widened and has a fuscous 

 longitudinal dorsal streak each side of median line, darkest at 

 posterior margin ; ventrally there is a large squarish patch of 

 fuscous which is minutely roughened, cervical shield also 

 slightly roughened. Abdominal prolegs on segments 7-10. 



Pupa 4mm., pale greenish, a little browned on thorax, and 

 middle of dorsum of abdomen, leg — and antenna-sheaths ; wing- 

 sheaths extend about to apex of fifth abdominal segment; an- 

 tenna-sheaths extend beyond apex, curved up over abdomen to 

 near middle. The pupa is formed in a cocoon within the mine, 

 its position being indicated by a bit of white silk showing where 

 the larva ate a slit through the epidermis for the emergence of 

 the moth. 



Gmcilaria liihiscella n. sp. 



Male, female, 9-10 mm. Antenna one and one-third, pale ochreous 

 barred with dark fuscous. Palpi pale ochreous-whitish, terminal seg- 

 ment somewhat fuscous on outer side. Head and thorax pale brown- 

 ish-ochreous. Forewings ochreous, three dorsal outwardly-oblique 

 white streaks, widened and black-margined at base; a white slender 

 outwardly-oblique narrowly black-margined costal streak at three- 

 fourths of costa, beyond this 3 or 4 white costal spots; a wide sub- 



