Fig. 1. A in Reinstatement of the Lancelet Name Asymmetron lucayanum, Recently Proposed as a Junior Synonym of Branchiostoma pelagicum (Cephalochordata)

Fig. 1. A: Holotype of Branchiostoma pelagicum, 10 mm long, reproduced from Günther (1889, pl. V, fig. B); B: A preserved 6 mm-long larva of Asymmetron lucayanum collected from the Bahamas, reproduced from Andrews (1893, pl. XIII, fig. 5), laterally inverted for comparison with A. Arrow indicates urostyloid process.