Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

50Maggenti and Gardneramphid n. [Gr. amphi, on both sides] (NEMATA) One of a pairof lateral chemosensory organs opening on or near the lipregion; variable in size and shape according to taxa.amphid aperture see amphidial apertureamphidelphic a. [Gr. amphi, on both sides; delphys, womb](NEMATA) Pertaining to uteri opposed; position and directionof the uteri, not the ovary. see didelphic.amphidetic a. [Gr. amphi, on both sides; detos, bound] (MOLL:Bivalvia) Refers to the ligament extending both before andbehind the umbo or beak. see opisthodetic, parivincular.amphidial aperture (NEMATA) The amphid opening pore ororifice through which stimuli are received.amphidial duct (NEMATA) The passage connecting the amphidialaperture and the amphidial pouch.amphidial gland (NEMATA) A gland originating posterior to thenerve ring that connects with the anterior lateral amphids.amphidial nerve (NEMATA) The nerve originating posterior tothe nerve ring that extends anteriorly, connecting to theamphid.amphidial pouch or pocket (NEMATA) The anterior cavity orchamber of the amphid; a fovea.amphidial tubes (NEMATA) Passages containing the amphidialnerves connecting the fibrillar terminals and the sensilla.amphidiploid see allopolyploid, allotetraploidamphidiscs, amphidisks n.pl. [Gr. amphi, on both sides;diskos, round plate] (PORIF: Hexactinellida) Small spiculeswith hooks at both ends, grapnel shape; no six rayed spicules.amphigean, amphigaean a. [Gr. amphi, on both sides; gaia,the earth] Pertaining to both the Old and New Worlds.amphigenesis n. [Gr. amphi, on both sides; genesis, beginning]Development induced by the fusion of two unlikegametes; amphigony.amphigonic a. [Gr. amphi, on both sides; gonos, seed] Referringto sperm and ova being produced in separate gonadsin different individuals; biparental reproduction. see di-