Chambcrlin R. V. 1910-1912. Chilopoda of California. Pomona Jour. Zool. 

 Entom., 2, 3 and 4. (Three parts) 



Chamberlin, R. V. 1911. The Lithohiomorpha of the Southeastern States. 

 Ann. Entom. Soc. Amer., Vol. 4. 



Chamberlin, R. V. 1912. The Geophiloidea of the Southeastern States. Bull. 

 Mus. Comp. Zool, Vol. 54, No. 13. Cambridge, Mass. 



Cook, O. F. and Collins, G. N. 1895. The Craspedosomatidae of North 

 America. Annals N. Y. Acad. Sci., Vol. 9. 



Gunthorp, H. 1913. Annotated List of the Diplopoda and Chilopoda, with 

 a Key to the Myriapoda of Kansas. (Contains an extensive bibliography.) 

 Kan. Univ. Sci. Bull., Vol. 7, No. 6. 



Williams, S. R. and Hefner, R. A. 1928. The Millipedes and Centipedes of 

 Ohio. Ohio Biological Survey, Bull. 18 (Vol. 4, No. 3) (Ohio State 

 Univ. Bull, Vol. 32^) 



Wood, H. C. 1865. On the Myriapoda of North America. Trans Amer. 

 Phil Soc, Vol. 13. 



INSECTS 



The Insecta comprise the largest single group of the animal kingdom, 

 probably possessing more species than all the other groups together. They are 

 also unique in their very wide distribution, being found wherever life is pos' 

 sible, from mountain tops to subterranean caves and from the smallest ponds 

 to the greatest oceans. As might be expected of such a large and widely dis' 

 tributed group, there is great diversity of size and form. As one entomologist 

 has written, some adult insects are smaller than the largest proto2;oans and some 

 are larger than the smallest mammals. In regard to form we find some with two 

 pairs of wings, some with one pair, and some with no wings at all. The only 

 character at all constant in adult insects is the presence of six legs, so that the 

 name Hexapoda is frequently applied to them. Even this distinction fails when 

 we consider larval forms, however, and identification is often extremely 

 difficult. 



The Insecta arc of very great economic importance. A few, like the bee 

 and the silkworm, are of obvious benefit to man, who robs them to obtain food 

 and clothing for himself. Bees and many other insects play a most important 

 part in the economy of nature by carrying pollen from flower to flower, and so 

 enable plants to produce seeds. The bright colors of many flowers, as well as 

 their perfume, are adaptations to attract insects, and similarly remarkable adap' 

 tations have developed in the insects. The reader is referred to Charles Dar' 

 win's book, Oyi the Various Contrivances b>' which Orchids are Fertihzed b}) 

 Insects, for a classic and scholarly account of these relationships. 



223 



