In this note we will study the formal completion of the Jacobian of a certa
in class of curves over p-adic rings. These curves generalize the Legendre
family of elliptic curves. As an immediate application, we will describe th
e representation which is crucial for calculating the initial term of the s
pectral sequence, converging to the homotopy groups of the higher real K-th
eories EOn. (C) 2000 Elsevier Science B.V. All rights reserved.