Sentence:  For four of the six ( the anaconda and the amethystine python cannot be <WSD>included</WSD> for lack of data ) there is also a correlation between size at maturity and maximum length , the boa constrictor being the smallest and the Indian python the next in size at the former stage . 
Meaning of the word marked with <WSD> tags:  allow participation in or the right to be part of; permit to exercise the rights, functions, and responsibilities of