SARCOPHAGIDES. 99 



Antennae tawny, not reaching the epistoma ; third joint more than twice 

 the length of the second ; sixth hardly longer than the third. Thorax 

 with four black stripes, the outer pair much interrupted and much 

 broader than the inner pair. Wings slightly grey ; costal vein ending 

 at very little in front of the tip of the wing, with a spine by the end of 

 the subcostal ; subcostal vein ending at one-third of the length ; medi- 

 astinal vein ending at beyond half the length ; radial vein ending at 

 about four-fifths of the length ; cubital vein ending at near the tip of 

 the costal ; prcelrachial vein emitting a long branch and forming a right 

 angle at its flexure, near which it is much curved inward, and is thence 

 almost straight to its tip ; discal transverse vein with two very slight 

 curves, parted from the flexure of the praebrachial and from the border 

 by much more than half its length. Alulas whitish. Abdomen long- 

 obconical, with an indistinct darker dorsal stripe ; hind borders of the 

 segments black. Legs testaceous ; tarsi black. 

 Common. (E.) 



The following additional species of Dexia have been recorded 

 as British : 



1. Dexia anthracina, Meig. 



2. melanoptera, Fal. 



nana, Meig. 

 maura, F. 

 caminaria, Meig. 

 melania, Meig. 

 picta, W"eid. 

 carnifrons, Fal. 

 grisescens, Fal. 



SUBFAMILY 4. SABCOPHAGIDES. 



Sarcophaga et Trim, Meig. Sarcophagies et Trixa, Mcq. ; Westw. 

 Sarcophagarice p. et Trixa, Zett. 



Caput non vesiculosum. Antennas breves aut mediocres ; arista pubes- 

 cens aut plumosa. Thorax longus. Alula magnte. 

 Head not vesiculose. Antennae short, or of moderate length ; third 



joint generally soft ; sixth pubescent or plumose, bare towards the tip. 



Thorax long. Alula large. 



Most of the Sarcophagides, like some of the Mwscides, are dis- 

 tinguished by the softness of the third joint of the antennae. They 

 are generally viviparous, and are quickly attracted by decaying 

 matter, on which the larvse feed. 

 a. Antennae very short. 1. TRIXA. 

 a a. Antennae of moderate length. 2. SARCOPHAGA. 



