(94[a]¹ and the fact of many such species having wide ranges; and on the other hand,^t1 of allied species confined to one region of the world,^t2 having in that region^t3 narrow ranges.]

^t1 , ] retouched ^t2 , ] retouched ^t3 region] written over illegible letter

1. 'a' Library foliation mark.

Transcription and apparatus copyright the American Museum of Natural History