From Halopedia, the Halo wiki
The Bestiarum is a Forerunner-designed compendium of information about the various species in the Milky Way galaxy. Compiled by a Forerunner archival catalog, the Bestiarum also includes information about the species' homeworlds and the Forerunners' Technological Achievement Tiers. Sources for the information include the Halo Array, shield worlds, 2401 Penitent Tangent, and 343 Guilty Spark, with the latter Monitor's observations "under investigation".
Bestiarum - (CAVEAT)
|The following is a verbatim transcription of an official document for archival reasons. As the original content is transcribed word-for-word, any possible discrepancies and/or errors are included.|
The following information has been gleaned from a variety of sources, impartial and otherwise. Records retrieved from alien systems cannot be verified except by cross-reference against our own records. The significant system-wide lull in record-keeping for many of these species invalidates much of the provable veracity of this information. The following document is as accurate as possible under difficult circumstances but should be treated as an incomplete investigation only.
Investigation Status: ONGOING.
Information origins include:
UNSECURED ALIEN COMPUTER ARCHIVES (SUSPECT)
RECORDED OBSERVATIONS (VARIABLE)
TRANSLATED COMMUNICATIONS (VARIABLE)
INTERLOPED SYSTEMS (SUSPECT)
OWN ARCHIVAL EVIDENCE (ACCURATE)
COMMUNICATIONS FROM ARRAY INSTALLATIONS (CLEAR)
COMMUNICATIONS FROM SHIELDS (CLEAR)
ASSUMPTIONS FROM MONITOR 343 GUILTY SPARK (UNDER INVESTIGATION)
ASSUMPTIONS FROM MONITOR 2401 PENITENT TANGENT (CLEAR)
DNA/RNA/Silicon samples are encoded in this datastream. Reproduction of individuals for analysis is prohibited by this facility.
Tiers of Technology
- The Bestiarum is included exclusively in the Legendary Edition and Collector's Edition of Halo 3. In the Collector's Edition, it is a physical book, while in the Legendary Edition, it is included in an expanded digital form on the Legendary-exclusive DVD. The book has background summaries and renders of the different sorts of entities in the Halo universe.
- The "Reclaimer" entry of the Bestiarum erroneously places John-117's homeworld, Eridanus II, in the Epsilon Eridani system; the planet is actually situated in the similarly named Eridanus system. While the Bestiarum refers to the planet as "Epsilon Eridani II", ancillary material for Halo: Reach later established this designation as belonging to Reach, whose physical details (namely, its gravity and moons) were detailed to be different from the planet discussed in the Reclaimer entry, eliminating the possibility that the Bestiarum was in fact referring to Reach (the home of the SPARTAN-II program) instead of Eridanus II.