162 PEOCEEDINGS OF THE ACADEMY OF [Vol. LXXIV 



In the three specimens before us, the proximal fork of the first 

 branch of the median vein runs to the sutural margin ; in the single 

 male, however, the sinistral tegmen has this branch running di- 

 rectly into the ulnar vein, as described for the genotype, Sympaestria 

 acute-lobata Brunner. Unusual individual variation is shown by 

 this same fork being before the middle of the branch in the male, 

 beyond the middle of the branch in the Sandakan female and de- 

 cidedly beyond the middle of the branch in the Labuan female. 



In the tegmina the ulnar vein to near its apex, the median, its 

 first branch and forks of the same to near their apices and the dis- 

 coidal veins are very heavily defined in the discoidal and scapular 

 fields, other venation being scarcely noticeable to the naked eye. 



Type: 9 ; Labuan, British North Borneo. [Hebard Collection, 

 Type no. 858.] 



Size large, form robust but graceful. Vertex rounding strongly 

 ventrad, its surface flattened so that in dorsal aspect it appears 

 truncate, as wide as first antennal joint, showing mesad a short 

 but rather heavy medio-longitudinal sulcus. Pronotum with disk 

 feebly convex, broadening evenly caudad to the nearly semicircular 

 caudal margin, sharply defined from the vertical lateral lobes by 

 well rounded lateral angulation; lateral lobes decidedly deeper than 

 long, cephalic margin straight, broadly rounding into the briefly 

 straight ventral margin, which rounds even more broadly into the 

 weakly convex caudal margin, humeral sinus decided. Tegmina 

 and wings fully developed, the former stiff, shell-like, glossy, ap- 

 pearing smooth to the naked eye, but under the lens seen to be 

 thickly and very finely impressed between the myriad of very 

 minute veinlets; veins as described above; tegmina broadest meso- 

 proximad, the sutural margin showing there a broadly convex 

 angulation, margins convergent distad to the rather strongly 

 rounded apex. Ovipositor broad, curved upward, apex rounded, 

 dorsal and ventral margins armed distad with regular, small, 

 rounded serrulations. Subgenital plate small, convex, longer 

 than wide, triangularly acute-angulate produced with apex blunted. 

 Cephalic coxae unarmed. Genicular lobes of cephalic and median 

 femora rounded, of caudal femora bispinose. Ventral margins of 

 cephalic and median femora unarmed, of caudal femora with 2 to 

 5 internal and 3 to 6 external, minute, almost microscopic spines. 

 Cephalic tibiae rounded and with a single, minute disto-internal 

 spine dorsad ; internal auditory foramen conchate (or better termed 

 moderately swollen, rimate), external auditory foramen apert. 



Allotype: c? ; same data as type. [Hebard Collection.] 

 Agrees with female except as follows. Form slightly more 

 graceful, pronotum distinctly narrower cephalad. Tegmina with 

 surface of stridulating field much as elsewhere, stridulating vein 



