Next in the Century Club (over 100 kills) were the Stygian Screechers. The were slightly less populous than their cousins, the Somber Screechers and they dropped Treasure Chests at twice the clip! Unfortunately the sombers only dropped 1 and the Stygians dropped 2...Interestingly enough, they dropped it on my 97th and 100th kill right when I was just about done with them. OK, here are the results based on the 102 kills: 23.5% dropped Bat Ears, 4.9% dropped Advanced Artisan crafting books (one 7, two 8, and two 9), and the 2 Treasure Chest drops were Growl (Adept I) and Trap (Adept I).