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XIX. Hymenoptera Aculeata collected in Algeria hy the 
Rev. Alfred Edwin Eaton, M.A., F.E.S., and 
the Rev. Francis David Morice, M.A., F.E.S. 
Part IV. Descriptions of new Sphegidae. By the 
late Edward Saunders, F.R.S. 
[Read March 2nd, 1910.] 
[The following descriptions were intended for incorpora¬ 
tion in what would have been the concluding part 
(dealing with the Sphegidae) of a Paper commenced 
under the above title in these Transactions in 1901 and 
continued in 1905 and 1908. 
The author had before and during his last illness made 
some progress with other portions of the intended work; 
but these are in too incomplete and fragmentary a state 
to be published as they were left. The descriptions, 
however, though evidently a mere rough draft which the 
author would have revised and copied afresh before 
sending it to press, do not seem to require any sub¬ 
stantial alteration in order to make them useful to 
Hymenopterists. They are accordingly reproduced prac¬ 
tically as written, only a few clerical and grammatical 
slips (due to haste) have been silently emended, and 
here and there a blank space left by the writer for 
localities, dates, measurements, etc,, to be added later, 
has been filled by an insertion for which the author is 
not to be considered responsible, such insertions being 
always indicated by the employment of square brackets [ ]. 
Mr, Eaton presented all his captures to Mr. Saunders, 
and they are now—except a few given or exchanged away 
by the latter in his lifetime as duplicates—in the Natural 
History Museum at South Kensington. 
The other materials gathered by Mr. Saunders for his 
paper have been handed over to a colleague whom he 
had invited to co-operate in preparing it, and it is hoped 
that in some form or other at least their main substance 
may be made available to Hymenopterists by communi¬ 
cation to the Society before the end of the present 
year.] 
TRANS. ENT. SOC, LOND. 1910.— PART IV. (DEC.) 
