\[\begin{array}[]{ll}w^{\prime}_{\mbox{\tiny II}}(\tfrac{1}{2}\pi;a,q)=0,&a=b_{2%
n+1}\left(q\right),\\
w_{\mbox{\tiny II}}(\tfrac{1}{2}\pi;a,q)=0,&a=b_{2n+2}\left(q\right),\end{array}\]