Keywords: PZSL1889Page441.png Derro cf perrieri Birmingham Dero cf obtusa <small>Udekem 1855</small> en Adult of an unidentified tubificid oligochete worm from Birmingham England body tip from ventral cp spermatbecal pores ™‚ male pores Proceedings of the Zoological Society of London http //archive org/details/proceedingsofgen89zool vol 1889 issue 4 http //archive org/stream/proceedingsofgen89zool page/441/mode/1up page 441 1889 published 1890 Frank E Beddard text PD-old-70-1923 PZSL 1889-4 Naididae Oligochaeta anatomy Birmingham Animals of the West Midlands Unidentified Haplotaxida |