HYMENOPTERA. 
I.—CATALOG UES. 
EK. T. CRESSson.—Catalogue of the described species of North American 
Hymenoptera. <Proc. Entomol. Soe. of Philadelphia, Vol. i, 1861- 
63. 
H. 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. 
HK. 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. 
III,.—UONOGRAPHS AND SYNOPSES. 
TENTHREDINIDAH AND UROCERIDA. 
EDWARD NortTon.—Catalogue of the described Tenthredinide and Uro- 
ceride of North America. <Trans. Amer. Ent Soc., Vol. I, 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 Uroceridz 
are treated in Vol. II, pp. 349-367. 
HK. T. CRESSON.—Catalogue of the Tenthredinide and Uroceride of 
North America. <Trans. Amer. Ent. Soc., Vol. VIII, 1880, pp. 53- 
68. 
A synonymical reference list of the species; the Uroceride 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 Tenthredinide, 
which has been reproduced by Cresson in his general work of classifica- 
tion. 
CYNIPID 2A. 
R. OSTEN SACKEN.—On the Cynipide of the North American oaks and 
their galls. <Proc. Entom. Soc. Philadelphia, Vol. J, 1861-63, 
pp. 47-72; additions and corrections, J. ¢., pp. 241-259. 
ial 
