What are botulinus?

Some articles on botulinus:

The Satan Bug - Plot Summary
... them that there are two lethal bioweapons in the lab, a lethal strain of botulinus that oxidizes eight hours after its release, and a recently developed virus that he calls the "Satan Bug ... and both vials containing the "Satan Bug" and 1200 grams of botulinus missing ... incident in Florida proves the thieves' willingness to use the botulinus, General Williams receives a call threatening to release more of the toxin in Los ...