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It is possible that especially large anacondas will prove to belong to subspecies limited to a small area.

In snakes difference in size is a common characteristic of subspecies.

Boa constrictor:

A Colombian female's brood of sixteen boa constrictors born in the Staten Island Zoo averaged 20 inches.

This birth length seems to be typical.

When some thirteen records of newly and recently born individuals are collated, little or no correlation between length and distribution can be detected.

The range is from 14 to 25 inches ; ;

the former figure is based on a somewhat unusual birth of four by a Central American female ( see chapter on Laying, Brooding, Hatching, and Birth ), the latter on a `` normal '' newly born individual.

However, as so many of the records are not certainly based on newborn snakes, these data must be taken tentatively ; ;

final conclusions will have to await the measurements of broods from definite localities.