ACRYDIUM, 67 



slender, sometimes slightly widened towards the tips ; the carina? 

 serrulate, spiny, unarmed on the inner carina for the apical fifth ; 

 first joint of hind tarsi distinctly longer than tiie third. 



When the pronotum is produced beyond the hind femora, 

 tegmina and wings (extending beyond the pronotum) are usually 

 present. 



Key to the Species. 



1 {2) Pronotum and wings extending far 



beyond the hind femora atijpicale, Ilanc, p. 67. 



2 (1) Pronotum and wings httle, if at all, 



produced beyond the hind femora. [p. 69. 



3 (4) Pronotum with four black spots quadriplagiatum, Walk.", 



4 (3) Pronotum with only two black spots. [p. 68. 



5 (6) Median carina of prouotmn undulated, dilatatum, De Haan, 



6 (5) Median carina of pronotum regularly 



arched. 



7 (8) Body not hairy beneath bijnmctatum, L., p. 68. 



8 (7) Body hairy beneatli atypicale, form cei/lonum, 



[Hanc, p. Q7. 



68, Acrydium atypicale, Banc. 



Tettix atypicalis, Hancock, Spol. Zeyl. ii, 1904, pp. 108, 142, 155, 

 pi. iii, fig. 14. 



Body slender, granulate-punctate, grey or reddish, legs ringed 

 with brown. Vertex as wide as the eye and produced in front ; 

 antennae rather short, filiform. Pronotum truncate in frunt^ 

 produced behind considerably beyond the bind femora ; a brown 

 spot on each side behind ; raised between the shoulders, humeral 

 angles acute, median carina continuous, regularly arched in front, 

 and somewhat depressed behind. Tegmina oval, rounded at the 

 tips; wings considerably longer than the ])ronotum. Femora 

 slightly compressed, the carina? finely serrulate; hind tibi^ 

 spinose, first and third joints of hind tarsi of nearly equal length, 

 pulvilli pointed at the ends, third as long as the first two together.' 

 Margins of legs, mouth-parts, and under surface hairy. Ovipositor 

 short, the upper part rather wide. 



Length 11-5-14 mm.; hind femur, 5-5 mm. 



Ceylo]^ ; Kandy, Peradeniya, Dikoya. 



Taken on grassland and at light in February, July, and 

 November. 



Micropterous Form. 



Acrydium atypicale ceylonum, Hanc. 



Tettix atypicalis ceylonus, Hancock, Spol. Zevl. ii. 1904. nn 108 

 142, 143. ' VV ^ 



A small form, with the pronotum and wings more or less 

 abbreviated, and tlie middle femora expanded in the male. 



^2 



