442 
OETHOPTERA. 
Barhitktes ruficostata "(Fieber, MS.), sp. n., id. I. c. p. 19, pi. i. fig. 2, 
Ticino. 
Meconema brevipenne, Yersin : both sexes described and figured by 
Krauss, Verb. z.-b. Wein, xxiii. p. 19, pi. i. figs. 1-5, from Tirolean 
examples. 
Gerstacker (Von der Decken's Reisen) figures Eugaster loricatus, pi. ii. 
fig. 1, epJujjpiatus, fig. 2, talpa, fig. 3, Cymatomera paradoxa, fig. 4 (bead). 
AcEYDIIDiE. 
Thomas, 0. The Acrididce of the United States. Hayden^s 
Report of the United States Geological Survey of the 
Territories, v. pt. i. Washington : 1 873, 4to, pp. 1-258, pi. 
An exceedingly valuable monographic Synopsis of all the North 
American species, commencing with notes on structure, a review of the 
different classifications proposed by authors, Hst of species (227), notes 
on critical species, tabular synopsis, &c. The family is divided into two 
sub-families, Acridince and Tettigince, and the former of these into 7 
groups. The author adopts the reprehensible plan (in vogue with some 
other American naturalists) of placing his own name after already 
described species when they are transferred by him to other genera. He 
describes the following new genus and species : — 
Tropidolophus^ p. 138 ; type, Gryllus formosus^ Say. 
Tryxalis brevipennis, p. 58, fig. 12, Florida. 
Pyrgomorpha punctipemiis, p. 68, East Tennessee. 
Chrysochraon abdominalis, p. 74, Montana. 
Stenobothrus occipitalis, p. 81, Colorado, Wyoming, and Idaho; tricari- 
natus, p. 84, Wyoming. 
Gomphocerus clavatus, p. 96, Kansas. 
Tragocephala pacijica, p. 101, California. 
CEdipoda ptlattei \^p)latteana vel plattearum'], p. 123, Platte Rivers, 
Colorado and Wyoming, hoffmani, p. 127, Nevada ? 
Pezotettix unicolor, p. 151, Illinois. 
Platyphyma montana vel montanense], p. 155, Montana. 
Pedioscertetes, g. n., Thomas, P. Ac. Philad. 1873, p. 295. Resembles 
AcrolopJdtus, but the pronotum is not crested, and its posterior margin 
is rounded. P. nevadensis, sp. n. id. I. c. Nevada. 
Acridium sJwsJione [!], sp. n., id. I. c. p. 296, Nevada and Utah. 
Epliippigera longicauda, p. 220, fig. 3, mart'mczi^ p. 222, fig. 4, miegiiy 
p. 224, fig. 5, Bolivar, An. Soc. Esp. ii. pi. ix., Spain, spp. nn. 
Platycleis boscce, sp. n., id. I. c. p. 229, pi. ix. fig. 6, Escorial. 
Thrincus perezi, sp. n., id. I. c. p. 234, pi. ix. fig. 9, Spain. 
Gerstacker, S. E. Z. xxiv. describes the following new genus and 
species : — 
Perixerus, p. 192. Allied to Dactylolum, differs in its pilose body, 
more slender antennas and legs, narrower and shorter head, flat vertex, 
more approximate eyes, the transverse sulci of the prothorax almost 
