  \jellyfish \owl \cow \donkey\swordfish\label{3.49}q^2\frac{d\left( \lambda _j\right) }{a\left( \lambda _j\right) }%=\prod\limits_{i\neq j}\frac{\lambda _j^2q^{-2}-\lambda _i^2}{\lambda_j^2q^2-\lambda _i^2}.  \tiger \seahorse \artic-fox