4 MUSCID.E. 



porrectfB, subdeflexse, capite paullo breviores ; articulus primus cylin- 

 dricus ; secundus et tertius longitudine sequales, hie ovatus, ille cla- 

 vatus. Alse parallels, incumbentes. Ungues et onychia mediocria. 

 Head almost smooth. Mouth bare. Proboscis geniculate at the base. 

 Antennae porrect, slightly deflexed, a little shorter than the head ; second 

 and third joints of equal length, second clavate, third oval. Wings 

 parallel, incumbent. Ungues and onychia of moderate size. 



1. cinereum, F. E. S. iv. 399. 9 (1794); Fal.; Meig.; Mcq. ; 

 Germ. ; Zett. tibialis, F. conopsoides, Latr. notatum, Meig. ; Mcq. ; 

 Zett. irrorata, F. tessellata, F. Nigrum, cinereo-tomentosum, capite 

 albo-flavo vertice fusco, antennis articulo tertio nonnunquam subtus 

 fulvo, thorace vittis quatuor abdomineque maculis nigro-fuscis, alis sub- 

 cinereis basi hyalinis, halteribus flavis, genubus fulvis. Long. 2^-3 ; 

 alar. 4-5 lin. 



Black, with cinereous tomentum. Head whitish-yellow; vertex 

 brown. Third joint of the antennae occasionally tawny beneath. Tho- 

 rax with four stripes, and abdomen with spots of a dark brown colour. 

 Wings slightly grey, colourless at the base. Halteres yellow. Knees 

 tawny. 



Not common. (E.) 



Genus II. MYOPA. 



MYOPA, Latr. G. C. iv. (1809) ; Meig. ; Mcq. ; Desv. ; Westw. ; Zett. 



Conops p., L. ; F. ; Pz. ; Fal. Sicus p., Scop. Myopa p., F. ; Meig. 



Kl.; Fal. 

 Proboscis basi medioque geniculata. Antenna porrectse ; articulus primus 



cylindricus ; secundus clavatus basi compressus ; tertius brevis. Alee 



incumbentes, parallelse. 



Proboscis geniculate at the base and in the middle. Antenna porrect ; 

 first joint cylindrical ; second clavate, compressed at the base ; third 

 short. Wings incumbent, parallel. 



The species may be thus grouped : 



. Body ferruginous. Third joint of the antennae not more than half 



the length of the second. Discal transverse vein at the distance 



of half its length from the hind border. 

 b. Wings spotted. 



c. Transverse veins not clouded. Species 1 . 



c c. Transverse veins clouded. Species 2. 

 b b. Wings not spotted. 



c. Abdomen ferruginous. Species 3. 



c c. Abdomen black. Species 4. 



a a. Body black. Third joint of the antennae a little shorter than the 

 second. Discal transverse vein at the distance of one-fourth of its 

 length from the hind border. Species 5. 



