Help: identifying lunar features

Finally got out last night for some quick lunar viewing (TV-85 with
4mm Radian). Just N of Iridum, I caught a clear view of a rille or some
other small linear feature curving in an arc between crater Sharp & a
nearby small crater to the northwest. Anybody know (a) what the small
crater is called and (b) does this rille have a name (or did I imagine
it - it really has clear and fairly obvious). Also, I thought there was
a fairly linear ridge just to the side of the crater Foucault.
Any names, advice?

--
Brian Davis

.