GLOSSARY 



ABDOMEN (Lat. abdo, I conceal). The posterior cavity of the 

 body, containing the intestines and others of the viscera. In 

 many Invertebrates there is no separation of the body-cavity 

 into thorax and abdomen, and it is only in the higher Annulosa 

 that a distinct abdomen can be said to exist. 



ABERRANT (Lat. aberro, I wander away). Departing from the 

 regular type. 



ABNORMAL (Lat. db, from; nor ma, a rule). Irregular; deviating 

 from the ordinary standard. 



ACRODUS (Gr. akros, high; odous, tooth). A genus of the Ces- 

 traciont fishes; so-called from the elevated teeth. 



ACROGENS (Gr. akros, high; gennao, I produce). Plants which 

 increase in height by additions made to the summit of the 

 stem by the union of the bases of the leaves. 



ACROTRETA (Gr. akros, high; trStos, pierced). A genus of 

 Brachiopods, so-called from the presence of a foramen at 

 the summit of the shell. 



ACTINOCRINUS (Gr. aktin, a ray; krinon, a lily). A genus of 

 Crinoids. 



ACTINOZOA (Gr. aktin, a ray; and soon, an animal). That 

 division of the Ccelenterata of which the Sea-anemones may be 

 taken as the type. 



yEcLiNA (JEglS, a sea-nymph). A genus of Trilobites. 



^PIORNIS (Gr. aipus, huge; ornis, bird). A genus of gigantic 

 Cursorial birds. 



AGNOSTUS (Gr. a, not; gignosko, I know). A genus of Trilo- 

 bites. 



ALCES (Lat. alces, elk). The European Elk or Moose. 



ALECTO (the proper name of one of the Furies). A genus of 

 Polyzoa. 



ALETHOPTERIS (Gr. alZthZs, true; pteris, fern). A genus of 

 Ferns. 



ALG;E (Lat. alga, a marine plant). The order of plants com- 

 prising the Sea-weeds and many fresh-water plants. 



ALVEOLUS (Lat. alvus, belly). Applied to the sockets of the 

 teeth. 



AMBLYPTERUS (Gr. amblus, blunt; pteron, fin). An order of 

 Ganoid Fishes. 



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