S. Henshaw. — Bibliography of American Economic Entomologj. 

 Parts I-V. <U. S. Dept. Agric, 1890-1896. 

 Literature down to July 1, 1888. 



N. Banks. — Bibliography of American Economic Entomology. Part 



VI. <U. S. Dept. Agric, 1898. 



Literature from June 30, 1888,' to January 1, 1897. 

 CuRKENT Literature is catalogued in several publications, notably 



Entomological News, Bulletin Society Entom. d. France, and 111. 



Zeitsch. f. Entom. 



Blbuogeapht of Insects of the West Indies. — Rept. of Commit- 

 tee, Proc. Brit. Ass. Adv. Sci., 1888, pp. 1-28. 



HYMENOPTERA. 



I.— CATALOGUES. 



E. T. Ceesson. — Catalogue of the described species of North Ameri- 

 can Hymenoptera. <Proc. Entom. Soc. Phila., Vol. I, 1861- 

 1863. 

 E. T. Ceesson. — Catalogue of species and bibliography. Part 2 of 

 Synopsis of the Hymenoptera of America, north of Mexico. 

 Synopsis and Catalogue. Price $3. Transactions of the Am. 

 Entom. Soc, Supplementary volume, 1887. Philadelphia, 1887. 

 C. G. DE Dalla Torre. — Catalogus Hymenopterorum. 10 vols. 

 Leipzic, 1893-1900. 



Vol. I, Tenthredinidae; II, Cynipidse; III, Ichneumonidse, etc.; IV, Bracon- 

 idse; V, OhalcididseandProctotrupidae; VI, Ohrysididae; VII, Formicidse; 

 VIII, Fossores; IX, Vespidse; X, Apidse. Each volume can be pur- 

 chased separately. 



II.— GENERAL WORKS ON CLASSIFICATION. 



E. T. Crbsson. — Synopsis of the families and genera of the Hymen- 

 optera, north of Mexico, together with a catalogue of the described 

 species and bibliography. Transactions Am. Entom. Soc, Sup- 

 plementary volume, Part I, 1887. 



The second part contains the Catalogue of Species and Bibliography. 



W. H. AsHMEAD.-^Classification of the horntails and sawflies, or tbe 



suborder Phytophaga. <Can. Entom. , 1898, 7 parts. 

 W. H. AsHMEAD. — Classification of the bees, or the superfamily 



Apoidea. <Trans. Amer. Entom. Soc, 1899, pp. 49-100. 

 W. H. AsHMEAD. — Superfamilies in the Hymenoptera and generic 



synopses of the families Thynnidse, Myrmosidse, and Mutillidse. 



<Journ. N. Y. Entom. Soc, March, 1899, pp. 45-60. 

 W. H. AsHMEAD.— Classification of the entomophilous wasps, or the 



superfamily Sphegoidea. <Can. Entom., 1899, 7 parts. 



