142 
The following list of genera indicates their general distribution, 
and the systematic place of the new ones :— 
GRYLLAORIS, Serv., all regions. 
Disetona, Br., South America. 
Hyprrsanus, 4r., South America. 
PaRAGRYLLACRIS, Br., Australia. 
Neantivus, &r., Australia. 
Eontus, gen. nov., Australia. 
Eremus, 4r., Old World. 
Epacra, Br., Australia. 
ApoTrecHus, &r., Australia. 
APTERONOMUS, gen. nov., Australia. 
Ametrus, Sr., Australia. 
AMETROSOMUS, gen. nov., Australia. 
ScHIzopDActTyLus, Brullé, Asia. 
Comicus, Br., Africa. 
The principal work upon which this paper is based is Brunner’s 
Monograph of the two families, Vienna, 1888, and his descrip- 
tions of the species not actually known to me are herein repro- 
duced. The abbreviation “ Br.” signifies that author’s name. 
GRYLLACRIS, Serville 
Head short, globose. Occiput covered by pronotum. Vertex 
declined, fastigium usually wider than first antennal joint, mar- 
gins obtuse, acute or keeled, and contiguous in a straight line 
with the frontal. Antenne very long, usually about three 
times the body ; joints numerous, first joint large, more or less 
gibbous. Eyes pear-shaped, rather prominent. Usually three 
ocelliform spots. Face broad, transverse or elongate. Cheeks 
rounded, and quite smooth. Mandibles strong. Pronotum short, 
truncate before and behind, disk uneven, more or less coloured ; 
deflexed lobes roundly inserted and low, inferior margin straight. 
Elytra and wings perfectly explicate, former ample, more or less 
hyaline, many-veined, transverse veinlets very distinct, more or 
less brownish, alike in both sexes. Hind wings cycloidal, hyaline 
and diversely coloured, veins and veinlets often bordered brownish. 
Pectus narrow, meso- and meta-notum obscurely triangular. Fore 
coxee armed with a spine. Fore and middle femora compressed, 
suleate below, unarmed. Hind femora compressed, dilated 
cricket-like, sulcate below, the margins more or less spined. Fore 
and middle tibiz terete above, with 4-5 articulately inserted spines 
on each margin below. Hind tibie flattened above, with (mostly) 
Jive spines on either side, also three short apical spurs. Three first 
tarsal joints broadly lobed laterally, lobes of fourth jot much 
longer, claws small. Abdomen obese, seventh and eighth seg- 
ments of male more or less inflated, arched, latter often much 
