;3(J8 GLOSSARY. 



Al-lan-toid'e-a. Tlie group of Vertehrata in wliich tlie fcetus is furbished 



with an allantois, comprising the Keptiles, Birds, and Mannmals. 

 Al-lan-tois' (Gr. allas^ a sausage). One of the "membranes" of the fwtus 



in certain Vertebrates. 

 Al-ve'o-li (Lat. dim. o^ alous^ belly). Applied to the sockets of the teeth. 

 Am-bu-la'cra (Lat. amhulacrum.^ a place for walJcing). The perforated spaces 



or "avenues" through which are protruded the tabe-feet, by means of 

 which locomotion is effected in the KcMnoderiaola.. 

 Am'bu-la-to-ey (Lat. amhulo^ 1 walk). Formed for walking. Applied to a 



single limb, or to an entire animal. 

 A-met-a-eol'ic (Gr. c, without; metahole^ change). Applied to those insects 



which do not possess wings when perfect, and which do not, theretbre, pass 



through any marked metamorphosis. 

 Am'ni-on (Gr. amnos^ a lamb). One of the fo?ta] membranes of the higDer 



Vertebrates. 

 Am-ni-o'ta. The group of Vertehrata in which the fa?tus is fumis?-ed with 



an amnion, comprising the Eeptiles, Birds, and Mammals. 

 A-m(e'ba (Gr. amoibos^ changing). A species of Ehizopod, so called from the 



numerous changes of foi-ra which it undergoes. 

 A-m(e'bi-fokm. Ivesembling an Ammha in form. 



A-mor-pho-zo'a (Gr. a, without ; morphu^ shape ; so'/?, animal). A name some- 

 times used to designate the Sponges. 

 A-mur'phous. 

 Am-phib'i-a (Gr. arnpM^ both ; hios^ life). The Frogs, Newts, and the like, 



which have gills when young, bat can always breathe air directly when adult. 

 Am-phi-C(e'lous (Gr. amphi^ at both ends; kollos^ hollow). Applied to ver- 



tebrte which are concave at both ends. 

 Am'phi-discs (Gr. amphi^ at both ends ; disJcos^ a quoit, or round plate\ The 



spieula which surround the gemmules of Sj)ongiUa^ and resemble two 



toothed wheels united by an axle. 

 Am-phi-ox'us (Gr. amphi, at both ends; oxnif, shai-p). The Lancelet, a little 



tish, which alone constitutes the order PharyngohrandiU. 

 Am-phi-pneus'ta (Gr. ampid^ both ; pneo^ I breathe). Applied to the " pe- 



rennibranchiate " Ampnibians winch retain their gills through life. 

 Am-piiip'o-da (Gr. ampJd ; and pous^ a foot). An order of Crustacea. 

 A'nal (Lat. anus., the vent). Connected with the anus, or situated near the 



anus. 

 An-al-lan-toid'e-a. The group of Vertebrata in which the embryo is not 



furnished with an allantois. 

 A-nal'o-gous. Applied to parts which perfoiTn the same function. 

 An-am-ni-o'ta. The group of Wrtehraia in which the embryo is destitute of 



an amnion. 

 An-akth-eop'o-t>a (Gr. a, without; artJirofi, a joint; povf, foot). That divi- 

 sion of Ann ulose animals in which there are no articulated appendages. 

 Anch-t-lo'sis or Ank-y-lo'sis (Gr. onkulos^ crooked). The union of two 



hones by osseous matter, so that they become one bone, or are hnmovably 



joined together. 

 An-drog'y-nou8 (Gr. anh'^ a man ; gvne^ a woman). Synonymous with her- 

 maphrodite, and impl^'ing that the two sexes are united in the same indi- 

 vidual. 

 An'dro-phore8 (Gr. aur-r^ix man ; axidphero., I carry). Applied to medusifomi 



gonophores of the Ihjdrozoa^ which carry the spermatozoa, and dilfer Ju 



form from those in which the ova are developed. 

 An-nel'i DA (a Gallicised form of Annvlata). The Kinged AVorms, which 



form one of the divisions of the Anarthropoda. 

 An'nu-la-ted. Composed of a succession of rings. 

 AN->fU-Loi'DA (Lat. annylvf!^ a ring; Gr. eid^os^ form). The sub-kingdom 



comprising the Fchinodermata and the Scolecida (= Echinozoa). 

 An-nu-lo'sa (Lat. annulm). The sub-kingdom comprising the Anarthropoda 



and the Arthropoda or Artlculata^ in all of which the body is more or leaa 



evidently compoeed of a succession of rings. 



