1922] NATURAL SCIENCES OF PHILADELPHIA 143 



Elbenia tenera Brunner. 



1S78. E[lbenia] lenera Brunner, Monogr. der Phaneropteriden, p. 166. 



[ 9 , Borneo.] 

 1898. Elb[enia] triangularis Brunner, Abh. Senckenb. Naturfors. Ges., 

 XXIV, p. 255, pi. XVIII, fig. 42. [d*; Kina Balu, Borneo.] 



Labuan, British North Borneo, 2 d\ 1 9 . 



The present material proves conclusively the synonymy indi- 

 cated above, caused by Brunner's failure to associate the sexes of 

 this species. 



The anal tergite of the female has not been described. It is 

 strongly specialized, being produced in a pair of slender, straight 

 processes above the small, shield-shaped supra-anal plate. 



Length of body (all squeezed out) cT 24 and 24.7, 9 24.5; length 



of pronotum tf 5 and 4.8, 9 5.3; caudal width of pronotal disk 



c? 2.9 and 3, 9 3; length of tegmen & 34.5 and 32.8, 9 34.5; 



greatest width of tegmen cf 5.7 and 5.8, 9 6.5; length of cephalic 



femur cf 6.2 and 6.2, 9 6.5; length of caudal femur cT 20.8 and 



20.8, 9 22; length of ovipositor 9.8 mm. 



Elbenia nigro-signata Stal. 



1876. Elbenia nigro-signata Stal, Bih. K. Svenska Vet. Akad. Hand]., 

 IV, No. 5, p. 56. [c?: Malacca, British Straits Settlements.] 



Singapore, British Straits Settlements, (from C. F. Baker), 1 9 . 



The present female apparently represents the previously unknown 

 female of nigro-signata. It agrees closely with that sex of E. tenera 

 Brunner. In addition to having the forking of the branch of the 

 median vein more distal in position, the present female has the 

 anal tergite produced in a pair of very slender, slightly decurved 

 and divergent, straight processes, above the shield-shaped supra- 

 anal plate, these processes more slender and elongate and more 

 widely separated than in tenera. 



Length of body 16.7 (shrivelled), length of pronotum 5.3, caudal 

 width of pronotal disk 3.4, length of tegmen 36.7, greatest tegminal 

 width 7.3, length of cephalic femur 6.2, length of caudal femur 

 20.8, length of ovipositor 10.7 mm. 

 Elbenia makilingae new species. Plate XIII, figures 1 and 2. 



Known from a unique female, this sex differs from any pre- 

 viously described female of the genus, except E. manillensis Pictet, 22 

 in the brevity of the ovipositor. From that insect the present 

 differs in the smaller size and shorter pronotum, with lateral lobes 

 no deeper than wide. 



20 It appears very possible that Brunner's E. modesla, described from the 

 Philippines, will prove to be a synonym of manillensis. Pictet describes the 

 ovipositor of that species as short, but does not give the length. 



