How to remove these map light bulbs?

picsnapr

Hi Guys,
Does anyone know what's the type of these bulb sockets (Pics attached) and how to remove the bulbs from the sockets?
I tried pulling it out, but it's not budging at all, and I'm scared to break the glass if I apply too much force. Can someone please help?

thecardoc3

They push inward and then can be turned a quarter turn to disengage the retaining pin. That's the bump visible at the bottom end of the bulb in your pictures.