ONCOTYMPAXA. 117 



margins and a short basal lateral fascia ou each side ocliraceous ; 

 head beneath, sternum, legs, and opercula ochraceous ; abdomen 

 beneath brownish-ochraceous, the base narrowing and the apex 

 broadly black ; inner area of eyes and striations to face black ; 

 tegmina and wings hyaline, the first with costal membrane and 

 basal venation ochraceous, remaining venation fuscous, transverse 

 veins at bases of second and third apical areas infuscated. 



Length excl. tegm., cJ , 22 ; exp. tegm. 65 millim. 



Hab. Assam ; Margherita (DoherU/). Burma ; Teinzo (i^c'rt). 

 Tenasserim ; Meetan {Feci). 



Genus ONCOTYMPANA. 



Oncotyrapana, Stal, Ofv. Vet.-Ak. Fork. 1870, p. 710. 



Type, 0. pallidiventris, Stal, from the Philippines. 



Distribution. Oriental Region, Malayana (apparently not east 

 of the Philippines), China and Japan. 



Head (including eyes) nearly as wide or distinctly narrow'er 

 than base of mesonotum, its length about or nearly equal to space 

 between eyes ; pronotum considerably shorter than mesonotum, 

 its lateral margins a little convex, its posterior angles ampliated ; 

 mesonotum large, convex ; abdomen in male short, broad, about 

 as long as space between apex of head and base of cruciform 

 elevation ; tympanal coverings very globose and projecting beyond 

 the lateral abdominal margins ; opercula hi male short, transverse, 

 with their disks a little convex ; anterior femora spined beneath ; 

 • rostrum passing the posterior coxa3 ; tegmina and wings hyaline, 

 the first usually more or less maculate, apical areas eight, venation 

 normal. 



A. Head {including ei/es) a little narrower than base of mesonotum. 



a. Rostrum considerably passing the posterior coivce. 



h. Opercula in mcde pale, unicolorous, inivardlg overlapping, 

 broadlij and regidarly convex posteriorly. 



1612. Oncotympana obimbila, Dist. (Pomponia) A. M. N. H. (6) i, 



p. 2m (1888j ; id. Man. Orient, dead. p. 81, t. vi, f. 10, a, b 

 (1891). 



Head, pronotum, and mesonotum olivaceous ; head with lateral 

 strise to front, a transverse fascia between eyes (including area of 

 ocelli connected with posterior margin), blacR ; pronotum with a 

 broad black central fascia, widened anteriorly and posteriorly, 

 containing a central longitudinal broken ochraceous line, and 

 margined with pale olivaceous, the incisures, extreme lateral 

 margins, and a spot on posterior lateral margins black ; mesonotum 

 much suffused with black, as shown in figure ; abdomen black, the 

 tympanal coverings olivaceous, with their posterior and inner 

 margins black ; body beneath much shaded with black and finely 

 greyishly pilose ; opercula in male greyishly olivaceous ; tegmina 



