1883]. 33 



very slightly rounded, cilia short (i) ; costal edge folded and bent back 

 above, forming a deep furrow on upper surface, in which lies a very 

 long pencil of fine hairs (in (^ only ?). Pore-wings with 12 veins, 2 

 from considerably before angle of cell, 3 from angle, 7 and 8 stalked, 

 7 to costa. Hind-wings with 8 veins, 3 and 4 from a point at angle 

 of cell, 5 parallel to 4, 6 and 7 stalked. 



This does not nearly approach any described genus, but is allied 

 to the two following genera, which together belong to a peculiar group 

 of the OelechidcB, apparently forming a considerable proportion of 

 the Hawaiian fauna. 



Th. usitata, Butl. 



Bepressaria usitata, Butl., Ann. and Mag. Nat. Hisifc., 1881, 396. 



A variable and obscure looking species, not recognisable from 

 Mr. Butler's description. The normal form has the fore-wings dull, 

 rather light greyish-brown, with two or three dark fuscous dots near 

 base, two transversely placed in disc before middle, two^'iiearer to- 

 gether and almost confluent in disc beyond middle, and posterior half 

 of costa dotted with dark fuscous ; hind-wings greyish-white, more 

 greyish posteriorly. It varies principally in size and depth of 

 colouring. 



Synomotis, n. g. 



Head with appressed scales ; tongue long. Thorax smooth. An- 

 tennae slender, filiform, pubescent, basal joint moderate, simple. 

 Maxillary palpi obsolete. Labial palpi long, curved, ascending, second 

 joint clothed with appressed scales, somewhat rough beneath towards 

 the apex, terminal joint as long as second, slender, acute. Abdomen 

 moderate, margined. Posterior tibiae clothed with short, dense, ap- 

 pressed hairs. Fore-wings elongate-oblong. Hind-wings trapezoidal, 

 slightly broader than fore-wings, hind margin very faintly sinuate 

 below apex, cilia short (i) ; with an expansible pencil of long fine 

 hairs at base of costa. Fore-wings with 12 veins, 2 from considerably 

 before angle, 3 and 4 approximated at base, 7 and 8 stalked, 7 to costa. 

 Hind-wings with 8 veins, 3 and 4 stalked from angle of cell, 5 rather 

 bent and approximated to 4, 6 and 7 stalked. 



Closely approaching Tliyrocopa in neuration, and distinguished 

 principally by the free basal hair-pencil of .the hind-wings, and the 

 absence of maxillary palpi, as well as several minor differences. 



S. epicapna, n. sp. 



$ . 16-17 mm. Head, palpi, auteniise, and thorax pale fuscous, mixed with 



