HYMENOPTERA. 
I.— CATALOGUES. 
E. T. Cresson. — Catalogue of the described species of North American 
Hymeuoptera. <Proc. Entomol. Soc. of Philadelphia, Vol. 1, 1861- 
’63. 
E. T. Cresson. — Catalogue of Species and Bibliography. Part 2 of 
Synopsis of the Hymenoptera of America, north of Mexico. 
<Transactions of the Am. Entomol. Soc., Supplementary volume, 
1887. Phila., 1887. 
II.— GENERAL WORKS ON CLASSIFICATION. 
E. T. Cresson. — Synopsis of the families and genera of the Hymeno- 
ptera, north of Mexico, together with a catalogue of the described 
species and bibliography. <Transactions Am. Entomol. Society, 
Supplementary volume, Part I, 1887. 
The second part contains the Catalogue of Species and Bibliography. 
Ill— MONOGRAPHS AND SYNOPSES. 
TENTHREDINID^E AND UROCERID^E. 
Edward Norton. — Catalogue of the described Tenthredinidse and Uro- 
ceridae of North America. <Trans. Amer. Ent Soc., Vol. 1, 1867, 
pp. 31-84 and 193-280 ; Vol. II, 1868-’69, pp. 211-242 and 321-367. 
Gives synoptic tables of genera and species of both families; the Uroceridse 
are treated in Vol. II, pp. 349-367. 
E. T. Cresson. — Catalogue of the Tenthredinidie and IJroceridse of 
North America. <Trans. Amer. Ent. Soc., Vol. VIII, 1880, pp. 53- 
68 . 
A synonymical reference list of the species; the Uroceridm are treated on 
pp. 66, 67. 
Peter Cameron. — Monograph of the British Phytophagous Hymen- 
optera. 2 vols. London, 1882-’85. 
Contains ..n arrangement of the subfamilies aud genera of Tentliredinidie, 
which has been reproduced by Cresson in his general work of classifica- 
tion. 
CYNIPIDAE. 
R. Osten Sacken. — On the Cynipidm of the North American oaks and 
their galls. <Proc. Entom. Soc. Philadelphia, Vol, I, 1861- ? 63, 
pp. 47-72; additions and corrections, l. c ., pp. 241-259. 
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