THE GENERAL SUBJECT. 
LlS. 211 
Graber, Vitus. Die tympanales Sinnesapparate der Orthoptoren. 
Denk. Ak. Wien, xxxvi. pt. ii. pp. 1-13G, pis. i.-x. 
This very important memoir is divided into three consecutive parts : (1) 
the form of the apparatus in the Gryllidm and LocustidcB ; (2) its form 
in the AcrydiidcB ] (3) the physiology and comparative morphology of 
the apparatus in the Orthoptera, and of certain so-called analogous 
organs in insects in general ; each of these is again sub-divided into many 
sections, the whole forming an exhaustive essay, illustrated by crowded 
anatomical figures. 
. Die abdominalen Tympanalorgane der Cikaden und Gryllodeen . 
Tom. cit. pp. 273-296, pis. i. & ii. 
Provan CHER, L. Petite Faune entomologique du Canade. Les Ortho- 
pt^res. Nat. Canad. viii. pp. 13-26, 52-62, 72-81, 106-116, 134-143. 
SCHOCH, Gustav. Die schweizerischen Orthopteren. Analytische 
Tafeln zur Bestimmung geradfliigliger Insekten. Zurich : 1876, 8vo, 
pp. 48 {cf. Ent. Nachr. ii. p. 128). 
ScuDDER, S. H. Report on the Ortlioptera collected by the U. S. Geo- 
graphical Surveys west of the 100th Meridian, under the direction 
of Lieut. G. M. Wheeler, during the season of 1875. In Wheeler’s 
Rep. U, S. Geogr. Surv. W. of 100th Mer. 1876, pp. 278-295. 
The N. American species of Pezotettix and the (Edipodidoe are tabu- 
lated in this Report. 
■ . Fossil Orthoptera from the Rocky Mountain Tertiaries. Bull. 
U. S. Geol. Surv. i. (1875) pp. 447-449. ' 
. New and interesting insects from the Carboniferous of Cape 
Breton. Canad. Nat. viii. pp. 88-90. > 
Relates to fossils referred to the Odonata and Bla^dce. 
. List of the Orthoptera collected hj Dr. A. S. Packard in Colorado 
and the neighboring Territories, during the summer of 1875. Bull.' 
U. S. Geol. Surv. ii. pp. 261-267. 
. Synoptical Tables for determining N. American Insects. Psyche, 
i. pp. 169-171, 177 & 178. 
Two tables : the first concerns the families of Orthoptera, with notes 
on the principal bibliography ; the second concerns the Forjicularice. 
. A Century of Orthoptera. Decade V. — Forjicularioe (exotic). 
P. Bost. Soc. xviii. pp. 251-257. Decade VI. — Forjicularice (N. 
American), pp. 257-264. 
. Orthoptera from the Island of Guadalupe. Tom. cit. pp. 268-271. 
. The Mode in which Cockroaches and Earwigs fold their Wings. 
Am. Nat. x. pp. 521-529. 
A capital article treated in a popular manner, with good illustrative 
woodcuts, amplifying the studies of Saussure on the same subject. 
