COLEMANIA. — TRIGONOPTEKYX. 189 



228. Colemania sphenarioides. 



Colemaiiia sphenarioides, Bolivar, Bol. Soc. Espafi. Hist. Nat. x, 

 1910, p. 3l>0; Coleman, J. Bombay Soc. xx, 1911, p. 879; 

 PI. Maxwell Lefroy, J. Bombay Soc. xix, 1910, p. 1007. 



Straw-coloured or luteous. Head with a broad red and blue 

 band running behind the eyes to the front of the pronotum, front 

 red and blue, vertex witli tliree blue lines, one median, the others 

 lateral ; antennae bine-black, with a pale streak below and the 

 basal segments pale. Pronotum reddish in the middle above, 

 bordered by yellow bands edged within with black lines ; the 

 deflexed lobes banded N^itb black, red and yellow ; the meso- 

 and nieta-iiotum much smaller in the male. Tegmina extending 

 to the end of the first segments of the abdomen, reddish, with 

 pale nervures. Legs pale, bind femora and cerci striped with 

 yello\v ; hind tibise reddish, often pale at the base, spines tipped 

 with black. Abdomen pale above, the sides banded with brown 

 and grey, the lirst segment furnished with a tyni])anum. 



Length 31-40 mm. 



Madras : Mysore, Madras, Bellary. 



This species has recently been recorded as very destructive to 

 cholam {Andropogon sorghum) in various parts of India. 



Genus TRIGONOPTERYX. 



I'riffonopteri/.v, Charpentier, Orthopt. 1811, pi. v. 

 Type, Trigonoptery.v jmnctata, Charp. 



Eange. Oriental Region. 



Body long, much compressed. Head conical, compressed in 

 front, vertex ascending, fastigium sinuated on the sides, and 

 angulated in front, tempora narrou', separated b}' a very narrow 

 suture ; front oblique, sinuated, the frontal ridge between the 

 antenna? and the tip of the antennae raised, the margins separated, 

 forming a pyriform foveola, obsolete before the ocelli; antennse 

 rather long, triquetral, ensiform, externally dentated, inserted 

 near the eyes, the apical joint pubescent ; eyes oblong, slightly 

 sinuated, no lateral facial carinse. Pronotum compressed, back 

 narrow, parallel-sided, I'ounded and slightly sinuated in front, 

 behind obtusely angulated, but not produced ; the typical sulcus 

 indistinct, placed rather beyond the middle ; the deflexed lobes 

 perpendicular, but with obtuse carina*, trapezoidal, considerably 

 raised behind, with the inner margin straight, the hinder margin 

 somewhat sinuated, and the hinder angle acute. Tegmina long, 

 extending nuicli beyond the hind femora, the anal area narrow, 

 the front area sinuated before the extremity, the anal riervure 

 straight. Legs compressed; front femora short, the intermediate 

 femora passing the extremity of the coxse, the hind femora com- 

 pressed, with the externo-median area well developed; hind tibia) 

 slender, \\ ith an outer apical spine ; tarsi very short. Prosternum 



