The much larger Taculbain flying about their heads were providing a diversion, the Mecrim jumping into the air whenever one came close. A ring of Dugarqs with guns had surrounded the beasts.

I found this rather a confused and slightly tedious tale, the Doctor, Jamie and Zoe landing on a planet where medievalish humans are dominated by an anti-science cult and various subterranean alien races emerge to do battle or otherwise prop up the plot. The is one nice scene with Jamie and Zoe driving a hovercar together. And there is a nice continuity touch: the I in IMC originally stood for Issigri.