328 Mr. G. H. Verrall’s descriptions of 
hunting for X. florwm showed me where Callicera paid 
fleeting visits, hunting for Callicera showed me where 
Palloptera usta occurred in some numbers, while catching 
P. usta put me on the track of a Drosophila which sat on 
the stumps and flicked its wings about almost exactly 
like Palloptera.” 
I have had much pleasure in naming this fine species 
after Col. Yerbury, especially as the species of this genus 
and of the allied genus Ceria have been very extensively 
used for association with their original captors or with 
well-known Dipterologists. 
C. DOLESCHALLT, n. sp. 3. 
3g. Head wider than thorax and seen in profile nearly two-thirds 
as long as deep; face shining black slightly obscured with brownish- 
grey dust and with rather abundant pale brownish-grey pubescence, 
hanging down or sloping rather inwards, leaving bare a broad shining 
black middle line all down the face; eye-margins broadly dusted 
brownish-grey, seen from above there is a line of dark pubescence 
running down the sides of face from the base of antennae parallel 
with eye-margin; frontal prominence broad and rounded all polished 
black; upper part of face under antennae bulging; a rather broad 
black space across front part of jowls from eyes to mouth, jowls with 
ong brownish-grey pale pubescence like that on face; lower half 
of back of head a little inflated and all the same brownish-grey 
colour as facial eye-margins but with only short brownish-yellow 
pubescence, upper half blackish, reduced in width and hollowed 
out towards vertex, with a brownish post-ocular ciliation on upper 
part ending in much longer hairs on vertex. Eyes with dense brown 
pubescence longest on front part of eye, shorter, rather sparser and 
paler below and behind, but no dark band visible. Antennae with 
the basal joint long, rather ferruginous, second joint dark-brown 
about two-thirds the length of first, third joint dark-brown and 
nearly so long as the first two together, about as thick as end of 
second joint for half its length then gradually tapering to a moderate 
point, arista not quite so long as the third antennal joint, blackish 
and moderately thick on basal quarter then not conspicuously 
white but slightly brownish-white and ending in a very sharp point, 
the basal antennal joint with unusually conspicuous bristly pubes- 
cence on end three-quarters above, and on end half beneath, second 
joint with very minute, hardly noticeable pubescence. 
Thorax dark aeneous, appearing darker behind because of black 
pubescence, on the disc may be traced with difficulty a broad middle 
