Stratiomyiidae. 25 



2. Snout long, withoiit white spots above the antennæ ... 1 . pantherinus. 



— Snout with white spots above the antennæ 3. 



3. Snout long, the white spots above the antennæ linear, 



oblique, nearly meeting in the niiddle 2. tiliginosus. 



— Snout short, the white spots above the antennæ trian- 



gular, not oblique, widely separated in the niiddle. ... 3. notattis. 



1. N. pantherinus L. 



1761. Musca. Linn. Fn. Suec. 1783. — 1842. Zett. Dipt. Scand. I, 150, 4. 



— 1846. Loew, Linn. Entom. I, 445, 9. — 1862. Schin. F. A. I, 4 et 5. 



— 1903. Kat. palaarkt. Dipt. II, S. 



Male. Snouth rather long and pointed; antennæ brownish black 

 or black, inserted nearly in the niiddle of the snout ; front, above the 

 antennæ, white, with a fine impressed middle line. Eyes slightly 

 elongated, longer than high, dark greenish, slightly metallic, unicolorous; 

 they are bare, but the eye-suture is finely haired. Thorax shining 



o- 9 



Fig. 8. Head of N. pantherinus, male and female. 



black, slightly bluish, with greyish white shining pubescense; hnmeral 

 cailus small, white, and from this to the wing-root on the side of 

 thorax a narrow white stripe. Abdonien white, the first segment with 

 a black spot in the middle, reaching nearly to the middle of the sec- 

 ond segment, and generally somewhat pointed; fourth segment black 

 at the hind part and fifth segment black on the front part, thus a 

 black transverse spot is formed, not reaching the side margins; this 

 spot varies a good deal in form and extent, often it is vaved on the 

 front and hind margins, or it has a white triangle in the middle, at 

 the hind margin of the fourth segment, or the hindmost margin of 

 the fourth segment is white and the spot thus separated in two bands, 

 often being more or less connected ; sometimes the spot is large, going 

 close to the front margin of the fourth segment. Venter white with 

 a black spot at the base, and sometimes a little darkened near the 

 apex. Abdomen is clothed with greyish white, shining hairs, especi- 

 ally distinct at the apex. Femora black with the tips broadly white, 

 tibiæ and tarsi white, hind tibiæ black in the middle nearest to the 

 apex, anterior tibiæ and the tarsi at the ends slightly darkened. Wings 

 hyaline, veins white, stigma very slightly yellowish. Halteres white, 

 the peduncle slightly darkened. 



