How many episodes of the Andy Griffith show was Ernest T Bass in?

Ernest T. Bass appeared in four episodes

'Mountain Wedding' 4/29/63

Ernest T. Joins The Army 10/13/63

My Fair Ernest T. Bass 2/3/64

The Education Of Ernest T. Bass 10/12/64

Howard Morris who portrayed Ernest T. Bass showed up later in 'Andy And Helen Have Their Day' as George a T.V. repair man

Ernest T. Bass appeared in five episodes. The fifth was 'Malcolm at the Crossroads' on Sep. 27, 1965.