268 NEW YORK STATE .MUSEUM 



geodiferous — containing or. abounding in geodes 



geodetic — geode-bearing, pertaining to geodes 



gibbous — swollen or humped 



glabella — central, most prominent. portion of the trilobite cephalon, bounded 



by the fixed cheeks 

 glomerate — growing in dense heads or clusters, generally of an irregular 



character 

 gonopolyp — reproductive polyp of Hydrozoa 

 granulated — having small and even elevations resembling grains 

 granulose — bearing or resembling grains or granules 



hexacoralla — class of corals built on the plan. of six 



hinge area — flat area bordering the hinge line of many brachiopods 



hinge line — line of articulation 



hydrocoralline — order of Hydrozoa which build calcareous skeletal structures 



hydroid — animal belonging to the class of Hydrozoa 



hydrotheca — cup inclosing. the nutritive polyp in thecaphore Hydrozoa 



hyponome — water tube, or squirting organ, of squids, cuttlefish, and other 



cephalopods 

 hypostoma — underlip of the trilobites, usually found detached 



imbricate — overlapping serially 



implantation — planting between, .as a new plication suddenly appearing be- 

 tween two older ones 



inarticulate — not articulating by teeth and sockets; of brachiopoda 



incised — cut into 



incrusting — covering as with a crust 



inequilateral — having unequal sides 



inface — steep face or escarpment .of a cuesta, facing toward the old-land 



inferior — lower in position 



inflated — distended in every direction and hollow within 



inflected — bent or turned inward or downward 



infrabasals — lower cycle of basal plates in the crinoids with dicyclic base 



infundibuliform — funnel-shaped 



inosculating — connecting, so as to have intercommunication 



interambulacral — between the ambulacra 



interapertural — between the apertures 



interbrachials — plates in the calyx of a crinoid, lying between the brachials 



intercalation — irregular interposition 



intercellular — between the cells or meshes 



interdistichals — plates in the calyx of a crinoid, lying between the 

 distichals 



interradials — plates in the calyx of a crinoid, lying between the radials 



interstitial — pertaining to an intervening space; between lines, plications, 

 etc. 



intervestibular — between the vestibules or circumscribed areas 



interzooecial — between the zooecial tubes in bryozoa, etc. 



