Referee's report by Augustus Daniel Imms, on a paper 'Structure and development of the reproductive system of some species of Nematocera (order Diptera: suborder Nematocera)' by S E Abul-Nasr Sectional Committee: Zoology Recommended for publication in the Philosophical Transactions of the Royal Society, if amended. Finds the paper more suited for the Royal Entomological Society. The paper does not attempt a comparative study, which would have been useful. Refers to work of G C Crampton. Suggests cutting down the list of references to those discussed in the text, and omitting some of the figures. Suggests greater reference be made to cerci. [Published in the Philosophical Transactions of the Royal Society] No received date. 9 December 1948