242 MUSCIDJE. 



third round ; fourth and fifth obsolete ; sixth setiform, slender, bare, 

 seated on the third. Thorax nearly elliptical. Wings moderately long ; 

 costal vein ending near or at the tip of the wing ; subcostal ending at 

 about one-third of the length ; radial ending at five-sixths of the length 

 or beyond ; cubital ending at the tip of the costal ; prsebrachial ending 

 at the tip, or on the hind border near the tip ; pobrachial complete ; 

 discal transverse straight, slightly oblique, beyond the prabrachial trans- 

 verse. Abdomen with six distinct segments. Legs of moderate length, 

 generally slender. Ungues and onychia very small. 

 a. Discal transverse vein parted by very little more than its length from 



the prsebrachial transverse, and by nearly twice its length from the 



border. 



1. Head wholly black. Species 1. 



b b. Head ferruginous in front. Species 2. 



b b b. Head yellow. Species 3. 

 a a. Discal transverse vein parted by a little more than its length from 



the prasbrachial transverse, and by about four times its length from 



the border. 



b. Legs black. 



c. Scutellum yellow. Species 4. 

 c c. Scutellum black. Species 6. 



b b. Legs yellow. Species 5. 

 a a a. Discal transverse vein parted by more than its length from the 



praBbrachial transverse, and by more than twice its length from the 



border. Species 7. 



1. nigripes, Meig. Zw. vi. 170. 7 (1830); Mcq. ; Zett. var. 

 reptans var. d. ambigua, Fal. ambigua, Zett. I. L. Nigra, oculis rufis, 

 alls subcinereo-hyalinis, venis nigris, halteribus albis. Long. 1-1 i; 

 alar. 2-3 lin. 



Slack, slightly shining. Eyes red. Wings slightly greyish-hyaline ; 

 veins black ; costal vein ending at the tip of the wing ; prasbrachial 

 ending on the hind border near the tip. Halteres white. Abdomen 

 very little longer and narrower than the thorax. Legs rather slender. 



Common. (E.) 



2. latipes, Meig. Zw. vi. 177. 34 (1830); Zett. Nigro-cinerea, 

 capite atro-bivittato antice ferrugineo, antennis piceis, thorace quadri- 

 subcarinato, alis albis, tibiis tarsisque flavo-cinctis, maris tibiis posticis 

 dilatatis. Long. -- ; alar. H lin. 



Greyish-black. Front with two deep black stripes, ferruginous towards 

 the face. Antennae piceous. Thorax with four slight ridges. Wings 

 white ; veins and halteres whitish. Abdomen elliptical, a little longer 

 than the thorax. Legs black ; a yellow band on each of the anterior 

 tibiaB ; first and second joints of the tarsi yellow at the base. Male. 

 Hind tibise dilated. Jem. Hind tibia3 with a yellow band. 



Local, or occasionally abundant. (E.) 



