New species of the Syrphid genus Callicera. 333 
shining on the front quarter of the second segment and narrowly 
along the hind-margin, while the third segment at the middle has a 
pair of brilliant aeneous, narrow, transverse bands well separated 
in the middle, widening upwards at sides towards basal corners and 
quite reaching the side-margins, the side-margins below them and the 
hind-margin narrowly are also rather bright aeneous; the fourth 
segment has a pair of similar transverse bands slightly sloping up- 
wards and nearly meeting at the middle. Pubescence (as left in 
specimen examined) forming a dense bright golden band on hind- 
margin of the second, third and fourth segments, but there are 
indications of golden pubescence all over the abdomen but no sign 
of any apical black hairs. Belly with rather universal golden 
pubescence (long on hind half of second and third segments), which 
tends to prove that upper side should be all covered. 
Legs, after the black coxae and trochanters, all fulvous except at 
tips of tarsi, pubescence as far as traceable all clear orange, no 
pubescence noticeable on front tibiae or any long pubescence visible 
behind anterior or in front of hind femora (probably, however, rubbed 
off). 
Wings with a strong fulvous tinge mainly caused by the orange- 
red anterior veins, but still the anterior part is all so tinged and it 
only gradually dies away towards tip and hind-margin; discal 
cross-vein at two-fifths discal cell, upper marginal cross-vein with 
a very slight angle, in fact only slightly rounded. Squamae pale 
yellow with long red-orange fringes. Halteres apparently with 
a brownish knob and pale stem. 
Length without antennae 12 mm. Antennae 4 mm. 
Described from a single specimen in the Hope Depart- 
ment of the University Museum of Oxford with a label 
‘* Mexico,” a small square coloured label [74| and a diamond 
shaped label ® 
