ARTHROPOD A— INSECTA. 425 



The last abdominal segment is often supplied with appendages 

 {cerci). 

 The development of insects is generally through metamorphosis. 



Literature. 



(Including Arachnids and Myriopods.) 



1876. Horn, G. H. Notes on Some Coleopterous Remains from the 



Bone Cave of Port Kennedy, Pa., Transact. American Entomological 



Society, Vol. V., pp. 241-245. 

 1886-1891. Scudder, Samuel H. Bibliographies and Indices to 



Fossil Insects, Bulletins of the U. S. Geological Survey, Nos 31, 



69, 71. 

 1890. . The Tertiary Insects of North America, Report of the 



U. S. Geological Survey of the Territories, Vol. XIII. 

 1890. . Fossil Insects of North America, 2 vols., New York. 



1892. . Some Insects of Special Interest from Florissant, Col., 



Bull. U. S. Geological Survey, 93. 



1893. , Tertiary Rhynchophorous Coleoptera of the United 



States, Monograph XXI., U. S. Geological Survey. 



1893. — — . The American Tertiary Aphidse, U. S. Geological Sur- 

 vey, 13th Annual Report, pt. II., pp. 347-356, pis. 102-106. 



1893. . Insect Fauna of Rhode Island Coal Fields, Bulletin U. 



S. Geological Survey, No. 10 1. 



1894. . Tertiary Tipulidse, v^^ith especial reference to those of 



Florissant, Col., Amer. Philosophical Society Proceedings, vol. 32, 

 pp. 163-246, pis. I. -IX. 



^^95* • Revision of the North American Fossil Cockroaches, 



Bulletin U. S. Geological Survey, no. 124. 



1895-1900. . Canadian Fossil Insects. (i) The Tertiary 



Hemiptera of British Columbia. (2) Coleoptera hitherto found 

 fossil in Canada. (3) Notes upon Myriopods and Arachnids of 

 Nova Scotia. (4) Additions to the Coleopterous fauna of the inter- 

 glacial clays of Toronto district. Canadian Geol. Survey. Con- 

 tributions to Canadian Palaeontology, Vol. II., Pt. I., pp. 1-26, pi. 

 I. pp. ; 27-56, pis. II. -III. ; pp. 57-65, pis. IV.-V. ; pt. II., pp. 

 67-90, 8 plates. 



1900. . Adelphagous and Clavicorn Coleoptera from the Tertiary 



of Florissant, Col., Monograph XL., U. S. Geological Survey. 



1903. Melander, A. L. Some Additions to the Carboniferous Ter- 

 restrial Arthropod Fauna of Illinois, Journal of Geology, Vol. II., 

 pp. 178-T94, 3 plates; vol. 22, pp. 249-258 ; vol. 23, pp. 345-355- 



