20 ANNALS OF SCOTTISH NATURAL HISTORY 



3. (4.) Thorax sometimes pale; hind tibiae with four bristles, a 



pair in the upper third, one in the middle of the hind 

 margin, and one close to the tip on outer side, costa 

 thickened. thoracica, Mg. 



4. (3.) Thorax black, costa normal. 



5. (6.) Hind tibiae with five or six bristles. ttrbana, Mg. 



6. (5.) Hind tibiae with only two bristles. fennica, Beck. 



curvinervis, Beck, a very common species under carrion, 

 in the spring and early summer. Probably to be met 

 with everywhere. 



thoracica, Mg., generally distributed, and sometimes 

 common. I have bred it from moles' nests. The 

 darkening at the tip of wings is, I find in all my speci- 

 mens, confined to the $ 9 > the male showing a hardly 

 perceptible yellower tinge. 



urbana, Mg. I bred this along with the last from moles' 

 nests. It is not a rare species. I meet with it every 

 season in fair numbers while sweeping. 



fennica, Beck. The rarest of the genus. I have only 

 met with 4 $ <$ and i $ at Bonhill. 



SPINIPHORA, Mall. 



Generic description: Antennae normal, arista dorsal, frontal 

 bristles as in C/nctoneura, mid tibiae with three equally strong bristles 

 situated, two on the basal third, and one on about the base of the 

 apical third on the outer side, costa moderately long, second vein 

 present, third thick vein bare, first thin vein bent at base, four thin 

 veins present. Type : inacnlata, Mg. 



Table of Species. 



1. (6.) Scutellar bristles, four in number, of equal size. 



2. (3.) Wings with a spot at origin of the first thin vein ; mid tibiae 



with two inside spurs. maculata, Mg. 



3. (2.) Wings unspotted ; mid tibiae with only one spur. 



4. (5.) Costa to about the middle of wing ; hind tibiae with four 



bristles. Sergenstammi, Mik. ( = domes tica, W.). 



5. (4.) Costa to beyond the middle ; hind tibiae c? with three 



bristles. (The $ has several extra bristles on the 

 upper side.) dorsalis, Beck. 



6. (i.) The anterior scutellar bristles reduced to mere hairs; hind 



tibiae with two bristles. erythronata, Strobl. 



The species of this genus seem to be confined to England. I 

 do not remember to have seen any Scotch specimens of any species. 



