POLYDICTYA. 



215 



before apical margin of vertex, not reflexed ; clypeus ecarinate ; 

 second joint of antennae transverse, produced upward from inser- 

 tion ; pronotnm medially unicarinate, roundly produced at apex 

 behind vertex : mesonotum about half longer than pronotnm ; 

 tegmina scarcely ampliated hut rounded at apex, costal margin 

 straight, longitudinal veins rarely furcate, small transverse veins 

 remotely scattered throughout the entire tegmina : wings remotely 

 transversely veined beyond the middle ; legs simple ; posterior 

 tibiae with four spines, their bases neither spinose nor tuberculate. 



Fig. 92. — Gehenna st/lvia. 



1735. Gehenna sylvia, St&l, Tr. E. S. (3) i, p. 583 (1863); Atkins. 

 J. A. S. Benrj. liv, p. 155 (1885). 



Head, thorax above, sternum, and legs ochraceous ; rostrum 

 piceous ; pronotnm a little infuscate on each side of central cari- 



nation and with small black 

 spots on each lateral area ; 

 mesonotum blackly punc- 

 tate on disk, some small 

 irregular black spots on 

 anterior margin, two spots 

 on each lateral margin 

 before apex, and a central 

 line on apex black ; abdo- 

 men above black, with 

 three longitudinal discal 

 fascioe and the segmental margins between them ochraceous ; face 

 somewhat thickly blackly punctate ; anterior and intermediate legs 

 with the femora spotted and the tibiae aunulated with black ; 

 abdomen beneath ochraceous, the lateral margins and transverse 

 spots at segmental margins black ; tegmina from base to a little 

 beyond middle purplish-red, remotely and irregularly blackly- 

 punctate, costal marginal area virescent, apical area subhyaline, veins 

 fuscous and with a few subconflnent fuscous spots; wings vitreous, 

 palely virescent at base, where they are streaked and apically mar- 

 gined with piceous, veins piceous; pronotnm with a medial acute 

 central carination, on each side of which is a broad longitudinal 

 ridge ; mesonotum acutely medially carinate and with a narrow 

 curved I'idge on each side of disk ; rostrum passing the posterior 

 coxae ; posterior tibiae with four spines. 



Length excl. tegm. 13 to 17 ; exp. tegm. 39 to 47 millim. 

 Hah. " North India '' (Brit. Mus.). Nilgiri Hills {Hampsoyiy 

 Coll. Dist.). 



Genus POLYDICTYA. 



Polydictya, Guer. Icon. Reyne Anim., te.rte Ins. p. 358 (1830-4) ; 



Stai, Hem. Afr. iv, p. 135 (1866) ; Atkins. J. S. Bern/, liv, p. 155 



(1885). 

 Thaumastodictja, A7/7.-. J. Bomb. Nat. Hist. Sac. 1902, p. 307. 



Type, P. hasalis, Guer. 



