montiporidæ

pl. [Mod. Latin montipor(a); Lat. fem. pl. adj. suff. -idœ.] Zool.: A sub-family of Madrepores, family Poritide. They have a spongy ti ue between the corallites. mont-li-văl-ti-a, subst . [From a proper name Montlivault. ( Aga iz .)] Palæont.: A genus of fo il corals, family Astræide, sub-family Astreine. The polypidom is simple, of a sub-conical or pyriform figure, wrinkled below. Range from the Trias to the Tertiary. mont-mart-rite, s. [From Montmartre, Paris, where found; suff. -ite ( Min .).] Min .: A variety of Gypsum or Selenite (q. v.), occurring mostly in arrowhead-shaped twin crystals, which contain some carbonate of lime. Found in the gypseous beds of the Paris Basin.