New $\ensuremath{\alpha}$ -emitting bismuth nuclides ranging in mass number from 189 to 197 and lead nuclides ranging from 186 to 192 have been produced in the following reactions: $^{203}\mathrm{Tl}{(^{3}\mathrm{He},xn)}^{206\ensuremath{-}x}\mathrm{Bi}$, $^{187}\mathrm{Re}{(^{16}\mathrm{O},xn)}^{205\ensuremath{-}x}\mathrm{Bi}$, $^{185}\mathrm{Re}{(^{16}\mathrm{O},xn)}^{203\ensuremath{-}x}\mathrm{Bi}$, $^{181}\mathrm{Ta}{(^{20}\mathrm{Ne},xn)}^{201\ensuremath{-}x}\mathrm{Bi}$, $^{159}\mathrm{Tb}{(^{40}\mathrm{Ar},xn)}^{199\ensuremath{-}x}\mathrm{Bi}$, $^{181}\mathrm{Ta}{(^{19}\mathrm{F},xn)}^{200\ensuremath{-}x}\mathrm{Pb}$, $^{182}\mathrm{W}{(^{16}\mathrm{O},xn)}^{198\ensuremath{-}x}\mathrm{Pb}$ and $^{155}\mathrm{Gd}{(^{40}\mathrm{Ar},xn)}^{195\ensuremath{-}x}\mathrm{Pb}$. Assignments were made on the basis of excitation function measurements and comparison with similar reactions leading to the formation of the analogous well-known Po nuclides. The following assignments were made, where for each nuclide the two listed numbers are the $\ensuremath{\alpha}$-ray energy in MeV and half-life: $^{197}\mathrm{Bi}^{m}$\char22{}5.77, 10 min; $^{195}\mathrm{Bi}$-5.43, 170 sec; $^{195}\mathrm{Bi}^{m}$\char22{}6.11, 90 sec; $^{194}\mathrm{Bi}$-5.61, 105 sec; $^{193}\mathrm{Bi}$-5.90, 64 sec; $^{193}\mathrm{Bi}^{m}$\char22{}6.18; $^{192}\mathrm{Bi}$-6.06, 42 sec; $^{191}\mathrm{Bi}$-6.32, 13 sec; $^{191}\mathrm{Bi}^{m}$\char22{}6.63; $^{191}\mathrm{Bi}^{m}$\char22{}6.86; $^{190}\mathrm{Bi}$-6.45, 5.4 sec; $^{189}\mathrm{Bi}$-6.67, 2 sec; $^{192}\mathrm{Pb}$-5.06, 2.3 min; $^{191}\mathrm{Pb}$-5.29, 1.3 min; $^{190}\mathrm{Pb}$-5.58, 1.2 min; $^{189}\mathrm{Pb}$-5.72, 51 sec; $^{188}\mathrm{Pb}$-5.98, 26 sec; $^{187}\mathrm{Pb}$-6.08, 17 sec; and $^{186}\mathrm{Pb}$-6.32, 8 sec. Estimates of $\ensuremath{\alpha}$ branching ratios are also presented.