From left to right:

1. Silver-haired Bat (Lasionycteris noctivagans)
2. Red Bat (Lasiurus borealis)
3. Hoary Bat (Lasiurus cinereus)
4. Greater Horseshoe Bat (Photo by Sung-Chol Kang at Manjang Cave, Cheju Island, Korea)
5. Chapin’s Free-tailed Bat (Chaerephon chapini)
6. Australian False Vampire Bat / Ghost Bat (Macroderma gigas)
7. Spotted Bat (Euderma maculatum)
8. Ghost-faced Bat (Mormoops megalophylla)
9. Honduran White Bat (Ectophylla alba)

All © Merlin D. Tuttle aside from 4. and 6. Can’t find anything on 6. but I suspect it’s probably Mr. Tuttle. More at Bat Conservation International.

*Edited 09/05/11