Hi David, the only English translation of cullavagga online seems to be the one on sacred-texts by Rhys Davids from 1885:TheDhamma wrote: I don't have my PTS Vinaya copy with me, but know that it is in the Cullavagga, chapter XI where it is recorded that the Patimokkha is recited and the five Nikayas at the First Council and that is it, no mention of any other texts.
http://www.sacred-texts.com/bud/sbe20/sbe20119.htm" onclick="window.open(this.href);return false;
From there:
I guess it's pointless to note the commentary position that "Abhidhamma is Pitaka by PitakaThus did the venerable Mahâ Kassapa question the venerable Ânanda as to the occasion of the Sâmañña-phala, and as to the individual concerned. And in like manner did he question him through the five Nikâyas, and as he was successively asked, so did Ânanda make reply.
classification, Khuddaka-Nikaya by Nikaya classification..." which would mean that it was recited as part of the fifth nikaya... By the way, do modern theravadins accept Petavatthu and Buddhavamsa (from the fifth nikaya) as having been recited at the first council (because there are also abhidhamma-related passages there, but I don't want to bore you guys if you don't consider them first council material either)?
Best wishes