564 GLOSSARY. 



AMPHIPODA (Gr. amphi, and pous, a foot). An order of Crustacea. 



ANAL (Lat. units, the vent). Connected with the anus, or situated near the 



anus. 

 ANARTHROPODA (Gr. a, without ; arthrot, a joint ; nous, foot). That division 



of . 1 in, ill,,. <r animals in which there are no articulated appendages. 

 ANCHYLOSIS or ANKYLOSIS (Gr. ankulos, crooked). The union of two bones 



by osseous matter, so that they become one bone, or are immovably joined 



together. 

 ANOIOSPERMS (Gr. angeion, a vessel ; tperma, seed). Plants which have their 



seeds enclosed in a seed-vessel. 

 ANNKLIDA (a Gallicised form of Annulata). The Ringed worms, which form 



one of the divisions of the . I narthropoda. 

 ANNULATED. Composed of a succession of rings. 



ANNULOIDA (Lat. annuhts, a ring ; Gr. eidot, form). The sub-kingdom com- 

 prising the Echinoderniata and the Scolecida(=Echinozoa). 

 ANNULOSA (Lat. annulux). The sub-kingdom comprising the Anarthropoda 



and the Arthropoda or Articulata, in all of which the body is more or less 



evidently composed of a succession of rings. 

 ANOMODONTIA (Gr. anomos, irregular; odous, tooth). An extinct order of 



Reptiles, often called Dicynodontia. 

 ANOMURA (Gr. anomos, irregular ; oura, tail). A tribe of Decapod Crustacea, 



of which the Hermit-crab is the type. 

 ANOPLOTH BRIDGE (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 destitute of a tail. Often called 



Batrachia. 

 ANTENNAE (Lat. antenna, a yard-arm). The jointed horns or feelers possessed 



by the majority of the Articulata. 

 ANTENNULES (dim. of Antennae). Applied to the smaller pair of antennae in 



the Crustacea. 

 ANTIBRACHIUM (Gr. anti, in front of; brachion, the arm). The fore-arm of 



the higher Vertebrates, composed of the radius and ulna. 

 ANTLERS. Properly the branches of the horns of the Deer tribe (Cervidce), 



but generally applied to the entire horns. 

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



' ' Pear-encrinites. ' 

 APLACENTALIA. The section of the Mammalia, comprising the two divisions 



of the Didelphia and Monodelphia, in which the young is not furnished 



with a placenta. 

 APODA (Gr. a, without ; pode*, feet). Applied to those fishes which have no 



ventral fins. Also to the footless Ccecilice amongst the Amphibia. 

 APODAL. Devoid of feet. 

 APTERA (Gr. a, without ; pteron, a wing). A division of Insects, which is 



characterised by the absence of wings in the adult condition. 

 APTEROUS. Devoid of wings. 

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



belonging to the order Cursores. 

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



Spiders, Scorpions, and allied animals. 

 ARBORESCENT. Branched like a tree. 

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



bird which alone constitutes the order of the Saunirce. 

 ARENACEOUS. Sandy, or composed of grains of sand. 

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



comprising Insects, Centipedes, Spiders, and Crustaceans, characterised by 



the possession of jointed bodies or jointed limbs. The term ArtJtropoda is 



now more usually employed. 

 ARTIODACTYLA (Gr. artioi, even ; daktulot, a finger or toe). A division of 



the hoofed quadrupeds (Unyulata) in which each foot has an even number 



of toes (two or four). 



