So, I'm using the visual key on the Texas bumblebee site (http://texasbumblebees.com/species/texas-species/), and it looks like I may not have gotten the right angles to ID this one...
Brown belted bumblebee?
Bumblebee pollinating the Camas at Cedar ridge preserve around sunset near the butterfly garden
maybe a Brown-Belted (Bombus griseocollis) Bumblebee pollinating the Atlantic Camas
A fuzzy looking yellow and black bee. He was collecting nectar when I saw him and was surprisingly ok with me being there with him.