From publisher blurb:
The Psionic Bestiary contains all manner of new creatures to unleash upon unsuspecting adventurers. In this release, we find six new monsters. Presented in this release are six new psionic monsters. From the subterranean and tentacled brataurus, to the aquatic dulah, to the one-eyed reva, these creatures provide interesting adversaries for different environments. These creatures range in CR, but all are ready for use in games that include psionic support!
In 2011, Dreamscarred Press held a contest for a psionic bestiary. The monsters from that contest are being released in a series of releases and will ultimately be compiled into a single psionic bestiary book.