  Elliptic quantum groups can be associated to solutions of the star-triangle
relation of statistical mechanics. In this paper, we consider the particular
case of the $E_{\tau,\eta}(so_3)$ elliptic quantum group. In the context of
algebraic Bethe ansatz, we construct the corresponding Bethe creation operator
for the transfer matrix defined in an arbitrary representation of
$E_{\tau,\eta}(so_3)$.
