V. Hymenoptera aculeata collected in Algeyia. The Sphegidae. (Being Part V of the work commenced by the late Edward Saunderfs.R,. S., in Trans. Ent. Soc. 1901, p. 515.)
Published in Transactions of The Royal Entomological Society of London, in 1911, in volume 59, pages 62-135
Date published:1911