GLOSSARY 



Words that are clearly explained in the text are not defined here 

 but reference is made to the page where the explanation occurs. 



Adduc'tor, 142. 



A'erated, mixed with air. The 

 water is aerated before sup- 

 plying the gills. 



Al'ulet, 74. 



Arnbula'cral, (Lat. Ambulare — 

 to walk). Pertaining to ^the 

 walking tube feet or their 

 areas. 



A'nal. Situated near the anus 

 or in the posterior region. 



Anal'ogous. Applied to organs 

 in animals that are put to 

 similar uses but are different 

 in origin and structure, as the 

 wings of a grasshopper and 

 bird. 



Anas'tomosing. Mixing as in 

 the mixing of veins of differ- 

 ent directions. 



Annel'ida. A group of animals 

 with bodies composed of simi- 

 lar segments without jointed 

 legs. 



An'nulated. Surrounded b y 



bands or rings of different 

 colors. 



An'nulus, 126. 



Ap'erture, 144. 



Appendic'ulate. Having small 

 appendages. 



Apposi'tion. Placed side by side. 



Ap'terous. Without wings. 



Aquat'ic. Living in water. 



Arach'nida, (Gr. Arachne — a 

 spider). A class of Arthro- 

 pods. 



Arthrop'oda, (Gr. jointed feet). 

 A branch of animals distin- 

 guished by having segmented 

 appendages. 



Asymmet'rical. Not symmetri- 

 cal. 



Au'ditory. Pertaining to the 

 sense of hearing. 



Bar'bules, 179. 



Beak. The sucking tube of some 

 Hemiptera. 



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