OETHOPTEEA. 913 



Cyetacanthacris punctipennis, "Walker. 



Oyrtacanthacris punctipennisy Walker, Proc. Zool. Soc, 1871, p. 246. 



Male. — Tawny, slender, testaceous beneath. Head short; tip of the vertex 

 depressed, nearly round ; front punctured, slightly oblique, with four well-defined 

 diverging keels ; inner keels ending in the flat ridge which extends from the tip of 

 the vertex. Antennae slender, a little longer than the head and the prothorax to- 

 gether. Prothorax with a very slight keel, which is most apparent near the hind 

 border ; four transverse impressed lines, the first, as usual, widely interrupted in the 

 middle; fore border hardly curved; hind border slightly elongated and angular. 

 Prosternal spine thick, oblique, rounded at the tip, approaching the mesostemum. 

 Abdomen testaceous, with a piceous stripe which extends from the base to beyond 

 half the length. Pore- wings cinereous towards the tips, with numerous blackish 

 points, which mostly form very irregular bands ; a row of subcostal black more 

 determinate points. Hind- wings cinereous ; veins black. 



Length of the body 15 lines ; expansion of the fore- wings 30 lines. 



The prosternal spine is shorter, stouter, and more obtuse than that of Q. ruhi- 

 ginosa, which this species closely resembles. The speckled fore- wings distinguish it 

 from C. spissa. 



AcRiDiuM YiEESCENs, "Walker, Cat. Derm. Salt., B. M., iv, p. 635. 

 AcRiDiUM ANGTJSTiERONS, Walker, op. cit., iii, p. 593. 



Ep^romia vulnerata. He Haan., Verb. Gesch. Ned. Ind., p. 162, pi. xxi, fig. 

 Epjeeomia varia, Walker, Cat. Derm. Salt., B. M., iv, p. 774. 



Mastax innotata. Walker. 

 Mastax innotata, Walker, Proc. Zool. Soc, 1871, p. 247; 



Male. — Perruginous, slender. Head elongate, obliquely but abruptly ascend- 

 ing ; tip of the vertex conical, prominent, slightly bilobed ; front long, oblique, with 

 four well-defined keels; inner keels converging towards the face; outer keels 

 diverging towards the face ; clypeus and fore part of the face tawny. Antennse 

 black, short, slender, taT\Tiy towards the base. Eyes elliptical, prominent. Pro- 

 thorax short, sellate, widening hindward, with a slight keel ; a blackish mark on 

 each side in front of the transverse impressed line. Hind femora as long as the 

 abdomen. Hind tibiae slender, piceous, a little longer than the hind femora ; spines 

 small. Pore- wings narrow, cinereous, with two pellucid marks near the tips, the 

 mark on the hind border larger and more remote from the tip than the other, which 

 is costal. Hind- wings cinereous hyaline, with a blackish costal line ; veins black. 



Length of the body 10 lines ; expansion of the fore-wings 20 lines. 



Tetrix exultans, Stal., Eugenie Resa, p. 347. 



T 5 



