ACRIDID&. 
©. SraL.—Recensio Orthopterorum. Revue critique des Orthoptéres 
décrits par Linné, De Geer et Thunberg. Part1. Acridide, Stock- 
holm, 1873. 
A syuoptical arrangement of the genera of the family, with descriptions of 
new genera and species. 
Cyrus THOMAS.—Synopsis of North American Acridid#. <Report U. 
S. Geol. Survey, Vol. V, Part 1, 1873. 
A systematical arrangement of the described species of North American 
locusts: Part 1. Species of the Uniied States; Part 2. Species from 
other parts of North America. 
SAMUEL H. SCUDDER.—Spharagemon, a genus of Gidipodide; with 
a revision of the species. <Proc. Boston Soe. Nat. Hist., Vol. XVII, 
1875, pp. 467-471. Separate, under the title: Entomol. Notes, LV, 
pp. 66-70. 
A synopsis of the genus, with descriptions of new species. 
SAMUEL H. SCUDDER.—A revision of two American genera of Cidi. 
podidz. <Proc. Boston Soc. Nat. Hist., Voi. XVII, 1875, pp. 478- 
485. Separate, under the title: Entomol. Notes, Vol. LV, pp. 77-84. 
A synopsis of the genera Encoptolophus and Tragocephala. 
Cyrus THOMAS.—Manual of economic entomology. Part II]. The Aecri- 
dide of Illinois. <Ninth Report of the State Entomologist... 
of the State of L[llinois, 1880, pp. 73-140. 
Contains a synoptical table or key to the families of Orthoptera, a key to the 
subfamilies and genera, and a key to the Illinois species of Acridide. 
LAWRENCE BRUNER.—North American Acrididz, north of Mexico. 
<Third Report U. 8. Entomolog. Commission, 1883, pp. 55-61. 
A systematical list of the species described from North America. 
HENRI DE SAUSSURE.—Prodromus C&dipodiorum Insectorum ex ordine 
Orthopterorum. Genéve, 1884, 4to, 254 pp. 
A synoptical monograph of the subfamily Gedipodine of all countries, with 
descriptions of new species. 
