Chromosomes of meiosis of Attulus subgenus Sitticus 154 Attulus fasciger, three nuclei, one showing the two Xs together and toward a pole, Canada (43.351N, 79.759W) 155–163 Attulus pubescens, with XaXmYa sex chromosomes, Massachusetts (42.38N, 71.12W) 157–161 XmYa sex chromosomes from other nuclei; the second X is often not paired with them 162, 163 Second division nuclei, all having 14 acrocentrics, and some having in addition a metacentric (m) 164 Attulus terebratus, two nuclei (26a+XaXa0), Novosibirsk Oblast (53.730N, 77.866E).