40 



PYGIDICRANID.E. 



The name Di/scritina was proposed by Westwood (1881) for 

 the larval form, with long segmented cerci, which proved to be 

 identical with the insect described by Dohrn under the name 

 Ncmnopygia gerstcBckeri. This is, of course, a true Diplatys, so 

 Nannopygia must fall, although de Bormans describes Namio- 

 pygia gerstceclceri and Diplatys loagisetosa, Westwood, as separate 

 creatures in distinct genera. 



Table of Species, 



1. Forceps strongly depressed and dilated 

 near the base. 

 2. Last dorsal segment strongly dilated, 

 much wider than the waist ; broad 

 and flat part of forceps quite pro- 

 minent. 

 3, Elytra short, only li time as long 

 as broad, rounded at apex ; wings 

 abortive ; occiput not strongly 



depressed gladiator, Burr, p. 41. 



3.3, Elytra at least twice as long as 

 broad, narrow at apex ; wings 



well developed; occiput depressed, falcatus, sp. n., p. 42. 

 2.2. Last dorsal segment not strongly di- 

 lated, but little wider than the waist; 

 dilated part of forceps very short, 

 scarcely visible from above. 

 3. Penultimate ventral segment roun- 

 ded, gently sinuate at hinder 

 margin; forceps stout, very gently 



arcuate lefroyi, sp, n., p. 44. 



3.3. Penultimate ventral segment nar- 

 rowed ; binder border produced 

 to a small truncate lobe ; forceps 



more slender and arcuate angustatus, sp. u., p. 44. 



1.1. Forceps gradually attenuate. 



2. Penultimate ventral segment with 

 posterior margin distinctly excavate 

 or emarginate. 

 3. Penultimate ventral segment with 



round emargination bormansi, sp. n.,p. 45, 



3.3. Penultimate ventral segment with 



one or more deep triangular 



emarginations. 



4. Penultimate ventral segment bi- 



emarginate (small Singhalese 



species). 



•5. Colour red (/ersfcscJieri, Dohrn, p, 46, 



5.5. Colour black ernesti, sp. n., p. 48. 



4.4= Penultimate ventral segment with 

 three triangular emarginations 

 (large North Indian species) . . siva, Burr, p. 49. 

 2.2. Penultimate ventral segment entire or 

 gently sinuate. 



