The Collaborative International Dictionary of English v.0.48:

Vaginicola \Vag`i*nic"o*la\, prop. n. [NL., from L. vagina
   sheath + colere to inhabit.] (Zool.)
   A genus of Infusoria which form minute vaselike or tubular
   cases in which they dwell.
   [1913 Webster]