56 
ACRIDID.J3. 
O. StIl. — Recensio Orthopterorum. Revue critique des Orthoptbres 
decrits par Linn6, De Geer et Thunberg. Part 1. Acrididae, Stock- 
holm, 1873. 
A synoptical arrangement of the genera of the family, with descriptions of 
new genera and species. 
Gyrus Thomas. — Synopsis of North American Acrididae. <Report U. 
S. Geol. Survey, Yol. Y, Part 1, 1873. 
A systematical arrangement of the described species of North American 
locusts: Part 1. Species of the United States; Part 2. Species from 
other parts of North America. 
Samuel H. Scudder. — Spharagemon, a genus of GMipodidae; with 
a revision of the species. <Proc. Boston Soc. Nat. Hist., Yol. XY II, 
1875, pp. 467-471. Separate, under the title: Entomol. Notes, IY, 
pp. 66-70. 
A synopsis of the genus, with descriptions of new species. 
Samuel H. Soudder. — A revision of two American genera of GEdi 
podidae. ^CProc. Boston Soc. Nat. Hist., Yol. XYII, 1875, pp. 478- 
-185. Separate, under the title: Entomol. Notes, Yol. 1Y, pp. 77-84. 
A synopsis of the genera Encoptolophus and Tragocephala. 
Cyrus Thomas. — Manual of economic entomology. Part III. The Acri- 
didae of Illinois. <Ninth Report of the State Entomologist . . . 
of the State of Illinois, 1880, pp. 73-140. 
Contains a synoptical table or key to the lamilies of Orthoptera, a key to the 
subfamilies and genera, and a key to the Illinois species of Acrididae. 
Lawrence Bruner. — North American Acrididae, north of Mexico. 
<Third Report U. S. Entomolog. Commission, 1883, pp. 55-61. 
A systematical list of the species described from North America. 
Henri de Saussure. — Prodromus CEdipodiorum Insectorum ex ordine 
Orthopterorum. Geneve, 1884, 4to, 254 pp. 
A synoptical mouograph of the subfamily CEdipodinse of all countries, with 
descriptions of new species. 
