GYMNOSOMA. 11 



to its tip ; discal transverse vein almost straight, parted from the border 

 by hardly less than its own length. Alulae white. 



Rare. In the late Mr. Stephens' s collection. (E.) 



Genus IV. GYMNOSOMA. 



GYMNOSOMA, Fal. Rhiz. 9. 1 ; Latr. ; Meig. ; Desv. ; Mcq. ; Zett. 

 Musca p., L. ; F. ; D. G. ; Schr. ; Geoff. ; Schseff. ; Gmel. ; Ross. ; 

 Har. ; Pz. ; Lam.; Don. Tachina p., F. Ocyptera p., Latr. 

 Gymnosomea, Rhizomyz(B> Fal. Gastrodea, Desv. Gymnosomees, 

 Mcq. ; Westw. 



Corpus breve, latum. Caput mediocre; frons plerumque lata. An- 

 tennae articulo sexto nudo. Abdomen globosum, setis nullis. 

 Body short, broad. Head of moderate size ; front generally broad. 



Fourth and fifth joints of the antennae distinct ; sixth bare. Abdomen 



globose, without bristles. 



1. rotundata, L. F. S. 1838 (1761); F.; D. G. ; Schr.; Gmel.; 

 Ross. ; Pz. ; Fal. ; Desv. ; Latr. ; Lam. ; Meig. ! Zw. iv. pi. 39. f. 21 ; 

 Desv. ; Mcq. ; Zett. cerinus, Har. ; Geoff. ; Schaeff. Nigra, capite 

 aurato antice albo, thorace luteo-tomentoso rrigro-quadrivittato, alis 

 subcinereis. Long. 3 ; alar. 6 lin. 



Black. Head gilded above, whitish in front, white beneath and 

 behind. Frontalia ferruginous. Facialia without bristles. Epistoma 

 slightly prominent. Antennae longer than the face ; second joint sub- 

 clavate ; third sublinear, indistinctly curved, rounded at the tip, a little 

 longer than the second, testaceous at the base ; sixth stout, testaceous 

 towards the base, a little longer the third. Thorax luteous in front, 

 with four black stripes, the outer pair interrupted. Wings slightly 

 grey, yellowish at the base ; costal vein ending at a little above the 

 tip of the wing ; subcostal vein ending at much beyond one-third of 

 the length ; mediastinal vein ending at much beyond half the length ; 

 radial vein ending at a little before seven-eighths of the length ; cubital 

 vein ending at a little above the tip ; praebrachial vein much curved 

 at its flexure, straight from thence to its tip, which joins the cubital 

 near the tip of the latter ; discal transverse vein very slightly undulat- 

 ing, its distance from the border about one-third of its own length. 

 Alulae large, whitish, with yellow borders. Halteres luteous. Abdo- 

 men luteous, black at the base, and with four black dorsal spots, the 

 first connected with the black at the base, a black spot on each side 

 at the tip. 



Rare. (E.) 



