GLOSSARY 395 



ANOMURA (Gr. anomos, irregular; oura, tail). A tribe of De- 

 capod Crustacea, of which the Hermit-crab is the type. 



ANOPLOTHERID^E (Gr. anoplos, unarmed; ther, beast). A family 

 of Tertiary Ungulates. 



ANOURA (Gr. a, without; oura, tail). The order of Amphibia 

 comprising the Frogs and Toads, in which the adult is desti- 

 tute of a tail. Often called Batrachia. 



ANTENNA (Lat. antenna, a yard-arm). The jointed horns or 

 feelers possessed by the majority of the Articulata. 



ANTENNULES (dim. of Antenna). Applied to the smaller pair 

 of antennae in the Crustacea. 



ANTHRACOSAURUS (Gr. anthrax, coal; saura, lizard). A genus 

 of Labyrinthodont Amphibians. 



ANTHRAPAL^MON (Gr. anthrax, coal; palcemVn, a prawn orig- 

 inally a proper name). A genus of long-tailed Crustaceans 

 from the Coal-measures. 



ANTLERS. Properly the branches of the horns of the Deer tribe 

 (Cervida}, but generally applied to the entire horns. 



APIOCRINID^E (Gr. apion, a pear; krinon, lily). A family of 

 Crinoids the " Pear-encrinites. " 



APTERYX (Gr. a, without; pterux, a wing). A wingless bird 

 of New Zealand, belonging to the order Cursores. 



AQUEOUS (Lat. aqua, water). Formed in or by water. 



ARACHNIDA (Gr. arachne, a spider). A class of the Articulata, 

 comprising Spiders, Scorpions, and allied animals. 



ARBORESCENT. Branched like a tree. 



ARCH^OCIDARIS (Gr. archaios, ancient; Lat. cidaris, a diadem). 

 A Palaeozoic genus of Sea-urchins, related to the existing 

 Cidaris. 



ARCH^OCYATHUS (Gr. archaios, ancient; kuathos, cup). A 

 genus of Palaeozoic fossils allied to the Sponges. 



ARCH^OPTERYX (Gr. archaios, ancient; pterux, a wing). The 

 singular fossil bird which alone constitutes the order of the 

 Saurura. 



ARCTOCYON (Gr. arctos, bear; kuon, dog). An extinct genus 

 of Carnivora. 



ARENACEOUS. Sandy, or composed of grains of sand. 



ARENICOLITES (Lat. arena, sand; colo, I inhabit). A genus 

 founded on burrows supposed to be formed by worms re- 

 sembling the living Lobworms (Arenicola}. 



ARTICULATA (Lat. articulus, a joint). A division of the animal 

 kingdom, comprising Insects, Centipedes, Spiders and Crus- 

 taceans, characterized by the possession of jointed bodies or 

 jointed limbs. The term Arthropoda is now more usually 

 employed. 



ARTIODACTYLA (Gr. artios, even; daktulos, a finger or toe). A 

 division of the hoofed quadrupeds (Ungulata} in which each 

 foot has an even number of toes (two or four). 



ASAPHUS (Gr. asaphzs, obscure). A genus of Trilobites. 



ASCOCERAS (Gr. askos, a leather bottle; keras, horn). A genus 

 of Tetrabranchiate Cephalopods. 



ASIPHONATE. Not possessing a respiratory tube or siphon. (Ap- 

 plied to a division of the Lamellibranchiate Molluscs.) 



