26 ^Ir. R. Slielford on some 



tcstnrcoiis, last scpjnicut aiul suhjiciiital lamina rufo-casta- 

 iicons ; supra-anal lamina sliort, trigonal, with a median 

 impressed line; suhgrnital lamina ample, scmiorbicular, 

 projoctiiig hovond the supra anal lamina; cerci moderate, 

 black. Lcjrs riifo-tcstafcous ; femora very si)arscly armed, 

 not more tlian two spines on the anterior and posterior 

 margins of each. 



Total length G mm. ; length of tegmina 4 miu. 



Andiahoniana, South ^Madagascar {6V<. Alluuud, 1901) ; 

 two examj)les (Paris Museum). 



One of the smallest sjiccics of the genus. 



Suhfam. rnYT.LoniiOMiy.r.. 

 Genus Iscuxoptera, Burm. 

 Jschnoptera Ridleyi, sp. n. 



(J. Head ferruginous, a V-shaped darker mark between 

 the antennal sockets ; antennae ferruginous, longer than the 

 body. Pronotum rounded, posteriorly truncate, sides slightly 

 dcflexed, not covering vertex of head ; disk rufous, with two 

 broad vitt:e, black in colour, not reaching the posterior 

 margin, their outer margins sinuate, their inner margins 

 stiaight. Tegmina ferruginous ; radial vein bifurcated at 

 the middle ; sixteen costal veins ; diseoidal area with eleven 

 longitudinal sectors; seven axillary veins. Wings hyaline, 

 veins fuscous, the marginal field sulTused with flavid ; radial 

 vein bifurcated at the middle, mediastinal vein with five 

 branches; fourteen costal veins ; median vein sinuate; ulnar 

 vein with fourteen branches, six of mIucIi go to the apex of 

 the w ing. Abdomen iufuscated above, ferruginous below ; 

 the seventh tergite notched in the middle of its posterior 

 margin, the eighth very narrow; the eighth sternite reduced 

 to a pair of lateral lappets ; the supra-anal lamina quadrate, 

 its posterior margin notched and produced on each side of 

 the notch into two curved and slender processes; the sub- 

 genital lamina subcpiadrate, its posterior margin much 

 thickened, forming two asymmetrical swellings which are 

 grooved and furnished with numerous minute denticles ; 

 styles absent. Front femora with the anterior border beneath 

 armed throughout its length with long stout spines. 



Length of body 22 mm. ; length of tegmina 20 mm. 



Singapore [H. N. Rldleij, jNlarch to May, 190G) ; one 

 exam})lc (Oxford Museum). 



This species, like so many of its Oriental congeners, presents 

 unusual modifications of those external parts which are 



