26 



ZOOLOGY 



of l)reathing by means of water taken in at the tail end of 

 tlie food-canal, may he observed (Fig. 27). 



\ / 



Fig. 24. — .\n adult May 

 fl.\'. 



Fig. 2.5.— .\ larval May 

 fl\'. From Parker arii:l 

 Haswcli. 



White ants, or termites (Isoptera, Fig. 28), while not true 

 ants, live a very similar social or communal life. They differ 

 from ants in the venation of the net-veined wing (when present). 

 White ants are most 

 a})undant in the 

 trojoics, where they 

 build great conical 

 nests of sand ce- 

 mented by their sa- 

 liva ; hut they are 

 found also in tem- 

 perate countries. 

 The common eastern 

 termite (Terine s 



f 



Fig. 26. — Two North 

 American Odonata, 1)0- 



longing to the family flcwipes) ranges from 



LibcllulidiE. About one- i\ T . ^ \ j. 4. 



, ,t t ■ Ti^ . I Massachusetts 



half nat. size. Photo. \>y 



V. H. L. southward, and lives 



Fig. 27. — Old larva 

 or ijupa of Dragon- 

 fly (.Fschiia). Nat. 

 size. Pho to. by 

 W. H. C. P. 



in wood or under stones. Three kinds or castes of white 

 ants occur in any community: (1) workers, with small, 



