278 Winter hsexfs of Eastern .Xeio York. [May, 



2. BoREUS BRUMALis. Tkc Mid-icinter Boreus. 



Polished deep black-green; legs, antenna?, rostrum, and ovipo- 

 sitor black; rudiinentaiy wings brownish-black. 



Lensj-th, male 0.10; female 0.12, or including the ovipositor 

 0.15. ^ 



This species presents no very obvious characters beyond those 

 already given. Its body is highly polished, shining even with a 

 metallic lustre, whilst the eyes, antennae, rostrum, and legs, reflect 

 the light but feebly. The ovipositor is pure black, but equally 

 splendent with the black-green abdomen. The scales which oc- 

 cupy the place of the wings in the females are but faintly percept- 

 ible, appearing like two minute greyish-black spots on the tho- 

 rax. In the living insect, there is a light fulvous vitta, obvious 

 to the naked eye, along each side of the abdom^en, at the lateral 

 suture; this is frequently obliterated or but imperfectly discernible 

 in the dried specimen. 



So far as I have at present observed, this appears abroad ear- 

 lier in the season, and in colder weather than the preceding, 

 though occasionally found associated with it on the last snows 

 that fall in the spring. It is much less common than the other. 



3. Peula nivicola. The Small " Snow-Jli/." 



Black; wings grey, unclouded, a third shorter than the abdomen 

 in the males, a third longer in the females. 



Length 0.20, wings expand 0.45; males smaller. 



Head shining, clothed with very short, fine hairs. Palpi 

 brownish-black, sub-diaphanous. Antennae reaching half the 

 length of the wings, black, setaceous, about thirty -jointed; joints 

 obconic, basal one largest. Prothorax flattened, its margins more 

 smooth and shining, its disk rugulose, with a few shallow im- 

 pressions; an impressed transverse line near the base and another 

 near the apex. ^%dovien shining, with a broad pale fulvous dor- 

 sal vitta which does not extend onto the two last segments; ven- 

 ter with a tint of obscure pallid at base. Seta? as long as the ab- 

 domen, black, setaceous, clothed with short whitish hairs; joints 

 from thirteen to about eighteen in number, obconic, gradually 

 shorter tov.'ards the base. Legs black, joints cylindric. Tiblce 

 obscure i)ale brown except at the tips, sub-dJaj)hanous, grooved 

 longitudinally. Tarsi, basal joint longest, second joint very short. 

 Wings reaching half the length of the setae, finely ciliated at 

 their tips and along their inner margins; grey, diaphanous, im- 

 maculate; nervures black, robust, anfl very strongly marked, par- 

 ticularly on the upper pair which have five closed cells in the 

 disk. The male is smaller, with the wings reaching but t\vo 

 thirds the length of the abdomen, its palpi and entire tergum 

 black, and the tibia? darker than in the female. 



