FAM. LOCUSTID.E 



SUBFAM. TYMPANOPHORIN/E 



This is a small subfamily consisting of but two genera, one described many \ ears ago and one 

 just recently established. Both genera are monobasic, and nothing is recorded concerning the life 

 history of the species. Tympana j>hora is known only from the male while Mortonidlus is known only from 

 the female. This makes a ke}' for their separation infeasible but as one genus is winged and known 

 onlyfrom Australia and the other is apterous and known only from Sumatra this does not so much matter. 



I. Genus TYMPANOPHORA, White 



Tympanophora. White, Grey' Journ. Exped. Austral. Vol. 2, p. 468 (1841); Kirby, Syn. Cat. 

 Orth. Vol. 2, p. 229 (1906). 



Characters. — Male the female unknown. — Vertex rounded, terminating in a sulcate fastigium. 

 Eyes prominent, elongate. Ocelli present, three in number, inserted in a triangle similar to certain 

 Mantidae. Antenna? long and slender, inserted between the eyes. Front broad, short and flat, without 

 carinas. Pronotum a little constricted, not covering the head; principal transverse sulcus situated much 

 before the middle; prozona somewhat rounded. Elytra with simple venation, the tympanii well deve- 

 loped; wings completely covered by the elytra. Anterior coxa? toothed; anterior and intermediate 

 femora very short, the posterior ones very long; the anterior tibiae provided with linear foramina, 

 unarmed above, below armed with a series of strong spines; posterior tibia with a terminal spur above 

 on the outer side only. Genital organs as in the Saginae. 



Type. — Tympanophora pellucida, White. 



Geographical distribution of species. — Australia. 

 1. T . pellucida, White. Grey' Journ. Exped. Austral. Vol. 2. p. 46S, f. Australia. 

 (1841); Brunner, Ann. Mus. Genova, Vol. 33, p. 182 (i8g3); Kirby, 

 Syn. Cat Orth. Vol. 2, p. 229 (1906). — Plate I, Fig. |. 



2. Genus MORTONIELLUS, Griffini 



Mortoniellus. Griffini, Wien. Ent. Zeit. Vol. 28, p. 107 (1909). 



Characters. — Female, the male unknown. — Head large, anteriorly somewhat depressed: 

 occiput transversely convex, elevated ; vertex convex, anteriorly declivate ; fastigium of the vertex 

 contiguous with that of the front, both bearing ocelli ; antennae slender, situated between the eyes, the 

 basal segment swollen, unarmed. Eyes large, prominent, ovately rounded. Front transverse, sparse!}- 

 punctate, transversely rugose. Mandibles stout ; palpi rounded appically. 



Pronotum very unequal, posteriorly somewhat elevated, from a top view as broad as long, the 

 anterior margin broadly concave with a recurved border; transverse sulci distinct and continued across 



