1920) Luiz and Cockerell, Notes on American Bees 633 



Cresson, E. T. 



1863. Proc-. Ent. Soc. Philadelphia, II. 



1864. Proc. Ent. Soc. Philadelphia, III. 



1865. Proc. Ent. Soc. Philadelphia, IV. 



1868. Trans. American Ent. Soc, I. 



1869. Trans. American Ent. Soc., II. 

 1872. Trans. American Ent. Soc, IV. 



1874. Trans. American Ent. Soc ,V. 



1875. Rept. Geog. Geol. Explor. and Surveys \V. of 100th Meridian, V. 



1876. Proc Davenport Acad. Nat. Sci., I. 



1878. Trans. American Ent. Soc, VII. After p. 200 published in 1879. 

 1878. Proc Acad. Nat. Sci., PhUdaelphia, XXX. 



1879. Trans. American Ent. Soc, VII. 



1887. Synopsis of the Hymenoptera of America, North of Mexico. Trans. 

 American Ent. Soc, Supplementary Volume. 



1916. Memoirs American Ent. Soc, No. 1. 

 Curtis, John 



1835. 'Descriptions, etc, of the Insects Brought Home by Commander 

 James Clark Ross, Appendix to the Narrative of a second Voyage 

 in .search of a Northwest Pa.ssage. . . .' by Sir John Ross. 



DiECKE, E. 



1907. Entomological News, XVIII. 

 Dahlbom, A. G. 



1832. 'BombiScandinaviae . . . ' 

 Dalla-Torre, C. G. 



1882. Ber. naturw.-mediz. Ver. lunsbruck, XII. 



1890. Wiener Ent. Zeitung, IX. 



1896. 'Catalogus Hymenopterorum, ' X. (Engelmann). 

 Dalla-Torre, C. G., and Friese, H. 



1895. Ent . Nachrichten, XXI . 

 Davidson, A. 



1911. Bull. Southern California Acad. Sci., X. 

 De Geer, C. 



1773. 'M^moires pour servir & I'histoire des Insectes,' III. 

 DivEN, E. L. 



1916. Entomological News, XXVII. 

 DouRs, A. 



1869. Mem. Soc. Linneene Nord France, II. (This is quoted here as of 

 1869, following Dalla-Torre and others, but it seems to have been 

 publi.shed in 1870.) 



DUCKE, A. 



1901. Zeit. Hymen. Dipt., I. 



1902. Zool. Jahrb., Abt. Systematik, XVII, 11903]. 

 1902a. Boletin do Maseu Paniense. Ill (see also 19026). 

 19026. AUg. Zeits. Ent., VII. 



1903. Allg. Zeits. Ent., VIII . 

 1910. Deulsch. Ent. Zeitsehr., 1910. 



1912. Zool. Jahrb., .\bt. Svstematik. XXXIV. 



