I think "electric bass" denotes the Fender bass guitar, an upright with a pickup is not considered "electric" in normal jazz usage, the pickup used for amplification purposes only, although it certainly alters the sound, especially when recorded via direct imput (from the pickup into the mixing board). To be exact, it would have to be called "electro-acoustic".
Okay, that makes much more sense.
Sorry ShowsOn, I didn't know what I was talking about. Again.