Figure 7 in REVIEW How the discovery of oligochaete regeneration during the Enlightenment was pivotal to the advancement of annelid research

Figure 7. Spallanzani's observations on his 'lombrico a batello', or 'boat-worm' (Criodrilus lacuum Hoffmeister, 1845). A, B, respiratory posture, with the head buried in the mud and the tail floating on the water surface. C, close-up of the richly vascular tail. D, E, regeneration of the caudal region and reforming of the anus. A, C–E, reproduced from Spallanzani (2003). B, reproduced from Biagi (1958: 108).