BASA. 143 



of cruciform elevation ; lateral margins of the abdomen above 

 paler in hue and ornamented with a segmental series of black 

 spots ; abdomen beneath paler in hue ; head, sternum, legs, and 

 opercula ochraceous ; tegmiua and wings hyaline, venation and 

 costal membrane of the first ochraceous. 



Length excl. tegm., S 34, 5 30; exp, tegm. 83 millim. 



Hab. Bombay (Leith and Dixon). 



In the specimen above figured the wings possess a short 

 supplementary apical area, maldug seven in all ; this is, however, 

 purely varietal, and all the other specimens I have examined 

 possess six only. 



Genus BASA. 

 Basa, Dist. A. M. N. H. (7) xv, p. 309 (1905). 



Type, B. sinr/ularis, Walk. 



Distribuiion. India. 



Head with front prominent and produced, its lateral margins at 

 right angles with anterior margins of vertex, its breadth between 

 eyes much narrower than base of mesonotum, its length about 

 equal to that of pronotum ; prouotum a little shorter tlian meso- 

 notum, its lateral margins convex anteriorly and concavely sinuate 

 before posterior angles, whicli are anipliated ; abdomen much 

 longer than space between apex of head and base of cruciform 

 elevation, its lateral areas obliquely de|)ressed above ; beneath with 

 the disk some\^hat flat and the marginal areas obliquely directed 

 upward ; tympanal flaps shorter, but not narrower, than tympanal 

 cavities ; opercula transverse and just passing base of abdomen ; 

 antei'ior femora strongly spined beneath near apex ; anterior tibia? 

 longer than femora, anterior tarsi more than half the length of 

 tibise ; tegmina and wings long and narrow, greatest width of the 

 first only equal to a third of length, its basal cell much longer than 

 broad, fourth ulnar area much compressed at base of third, apical 

 areas eight. 



1644. Basa singularis. Walk. (Dundubia) List Horn. Suppl. p. 7 

 (1858) ; Atkins. J. A. 8. Beny. liii, p. 225 (1885) ; Bist. 

 (Pompouia) Mon. Orient, dead. p. 72, t. vi, f. 4, o, h (1890). 



Head and thorax above greenish-ochraceous ; head with marginal 

 striae to front, area of ocelli, and two transverse spots at apical 

 angles of vertex fuscous ; pronotum with two central longitudinal 

 piceous fasciae, united posteriorly by a prominent arcuated spot, 

 the lateral areas brownish-ochraceons ; mesonotum with four 

 somewhat obscure obconical spots, the outermost longest, a bi'oken 

 sublateral fascia, a central lanceolate spot, and two spots in front 

 of cruciform elevation brownish-ochraceous ; abdomen with the 

 tympanal flaps, the central disk, and some obscure lateral spots 

 brownish-ochraceous ; body beneath and legs brownish-ochraceous ; 

 face, lateral margins of sternum, and opercula (in male) virescent ; 



