94 MUSCID^E. 



of the length ; cubital vein ending at near the tip of the costal ; prae- 

 brachial vein emitting a very short branch at its flexure, which forms a 

 right angle, from thence it is slightly curved inward to the- tip; discal 

 transverse vein with two extremely slight curves, parted by a little less 

 than its length from the flexure of the praebrachial, and by much less 

 from the border. Alulae whitish. Halteres testaceous. Abdomen 

 with a black triangular spot at the base. Legs testaceous; tarsi 

 black. Var. /3. Hind borders of the third and fourth abdominal seg- 

 ments black. Male. Front and frontalia narrow. Abdomen long-ob- 

 conical, testaceous on each side. Fern. Front and frontalia broad. 

 Abdomen oval. 

 Not rare. (E.) 



Genus II. DEXIA. 



DEXIA p., Meig. Zw. v. 3 (1826); Latr. ; Mcq.; Zett. Musca p., 

 F. ; Gmel. ; Panz. ; Fal. Ocyptera p., F. Folucella, Schr. Dexia 

 et Dinera, Westw. 



Corpus magnum aut mediocre, subcylindricum aut oblongum, pubescens, 

 setosum. Oculi oblongi, nudi, in mare approximati, in fcemina sat 

 remoti. Proboscis brevis. Palpi filiformes aut subclavati, setulosi. 

 Body large or of middle size, oblong or nearly cylindrical, pubescent, 

 bristly. Eyes oblong, bare, approximate in the male, rather remote in 

 the female. Proboscis short. Palpi filiform or subclavate, somewhat 

 bristly. 

 a. Praebrachial vein joining the cubital. 



b. Abdomen compressed. Ocyptera p., Fabr. Sericocera p., Mcq. 



Wiedemannia, Meig. Zw. vii. Species 1. 

 b b. Abdomen not compressed Dinera, EstJieria et Aria, Desv. 



Dinera, Mcq. Species 2. 

 a a. Praebrachial vein joining the costal. 



b. Sixth joint of the antennae plumose, with short hairs. Ocyptera 

 p., F. ; Musca p., Fab.; Zett. I. L. PJiyllomyia } Desv. Sericocera 

 p., Mcq. Melania, p. Meig. Species 3. 

 b b. Sixth joint of the antennae plumose, with long hairs. 



c. Palpi long. Musca p., F. ; Panz. ; Fal. Thelaira, Desv. 



Sericocera p., Mcq. Species 4. 

 c c. Palpi short. Species 5-8. 



The first, third, and fourth of the following species appear to be 

 Tackinides, the rest and Prosena might be joined to the Muscides. 



1. compressa,F.E.S.iv.327.64(1792); Meig.; Mcq.; Desv.; 

 Zett. lurida, Schr. rufa, ^.lateralis, Panz.! Fn. vii. 22.rufiven- 



