80 



INSECTS OP SAMOA. 



shows that this is a good species and not a variety of preceding ; it is unfortunate, 

 however, that the palpi are missing, as these would probably have given further 

 evidence, as usual in this genus. 



32. Thiotncha oxyopis, n. sp. 



cJ? 8 mm. Head silvery- white. Palpi white. Thorax silvery- white, 

 faintly yellowish-tinged posteriorly. Forewings narrow, more narrowed 

 posteriorly, costa faintly sinuate, termen obliquely rounded ; shining yellow- 

 whitish, posteriorly tinged greyish, in one example a fine grey subcostal line 

 from base to orange blotch ; sometimes an acute arrowhead-shaped grey mark 

 about fold near extremity ; an orange or greyish-orange blotch occupying 

 apical fifth, preceded by grey suffusion in disc, sometimes edged grey on costa 

 with a white dot at its anterior angle, on termen edged by a silvery-white streak 

 edged grey anteriorly or two white spots, in one specimen the lower bearing a 

 blackish dot : cilia whitish-grey, a round black basal spot at apex surrounded by 

 silvery-grey suffusion, blackish-grey basal and median shades more or less 

 expressed. Hindwings light grey ; cilia grey-whitish, at apex whiter, with two 

 short blackish bars. 



Upolu, Malololelei, 2,000 feet, November, 1 ex. ; also 2, Apia, September, 

 bred from portable cases found on leaf of Bacca (? Baeckia) (Sivezey) (Bishop 

 Museum) ; larval case cylindrical, dark brown, apparently made of gelatinous 

 silk, slightly granular, without attached materials ; all the known larvae of this 

 genus are case-feeders, an unusual feature in this family. Nearest Th. clidias ; 

 a quite distinct species, but variable in detail. 



33. Thiotricha strophiacma, n. sp. 



<$ 9 mm. Head, palpi, thorax silvery- white. Forewings elongate, termen 

 obliquely rounded, apex contorted and produced into a slender twisted ciliated 

 filament ; shining white ; a slight oblique fuscous mark towards dorsum in 

 middle of wing, a dot near dorsum at f , whence a faint short very fine line is 

 directed towards apex, and a dot on tornus ; some pale brownish suffusion 

 towards costa posteriorly ; a black dot preceding apical projection : cilia white, 

 on upper part of termen metallic. Hindwings grey-whitish ; cilia white. 



Upolu, Apia, March ; 1 ex. This specimen is partly sprinkled with black 

 atoms apparently due to smoke. 



