



nil'LOSARlD^E. 



DIPLOSARID^. 



Essential characters generally as in the Cosmopterygidcp, from 

 which it is distinguished particularly by the form of the hiiidwings, 

 which are usually elongate-ovate, more seldom ovate-lanceolate, 

 but ajwa}^wj.th the costa regularly arched, whereas in the Cosmo- 

 2->terygklce they range from lanceolate to linear, always with a more 

 or lessj)i;onounced costal shoulder towards or before g from base, 

 V accentuated with a projection of stiff scales, and the rest of the 

 costa beyond this more nearly straight, the apex always pointed. 



This family, as far as is known to me, is confined to the 

 Hawaii a n IslandSj^ where it constitutes the mass of the Micro- 

 Tepidopterous fauna, a very singular and notable fact. It compre- 

 hends all tlie genera between Aphthonehis and DipJosara inclusive 

 in Lord Walsingham's section of the ' Eauna Hawaiiensis,' there 

 credited with some 250 species, I daresay not more than half of 

 the total number existing. The family belongs to the same group 

 with tlie Gelechiadae, Oecophoridae, and Cosmopterygidae, agreeing 

 with them in the structure of the head and palpi and in the type of 

 neuration of forewings, and differing from them in the same 

 characters in which they differ from one another, viz., in the form 

 and typo of neuration of the hindwings as specified above ; it 

 forms therefoie a parallel branch of development with these from 

 the same origin, but peculiar from its rigid Local restriction. 



Aphthonetus empetra, n. sp. 



J 5 . 1 1-13 mm. Head, palpi, and thorax whitish closely 

 irrorated with fuscous. Abdomen whitish-grey. Forewii.'gs elon- 

 gate, narrow, costa gently arched, apex obtuse-pointed, termen 

 extremely obliquely rounded ; whitish sprinkled with grey and 

 dark fuscous, or light grey irrorated with whitish and sprinkled 

 with dark fuscous ; markings grey sprinkled with dark fuscous, 

 sometimes partially tinged with ochroous or brownish ; a rather 

 ill-defined basal patch occupying about 4 of Aving, edge nearly 

 straight, slightly oblique ; a moderate slightly oblique fascia from 

 costa at *, narrowed downwards and only reaching to fold where 

 it is terminated by a small tuft, anterior edge well-defined, 

 posterior suft'used ; somtiiues a dark suffusion extends along costa 

 from this fascia to | ; a cloudy spot on tornus, and some undefined 

 mottling towards apex : cilia pale grey or whitish. Hindwings 

 and cilia light grey. 



Oahu, Koolau Mts. (Perkins) ; four specimens. 



Neelysia alveata, n. sp. 



cT • 10-11 mm. Head white. Palpi white, second joint rather 

 dark fuscous except apex, terminal joint much shorter than second, 

 with base and a subapical ring black. Thorax rather dark fuscous, 

 patagia white. Abdomen rather dark fuscous. Eorewings elongate, 



z2 



