520 Records of the Indian Museum. [Vol. XXII, 



yellow spine and a very small internal one ; tibiae yellow with 



4 fuEcous rings, armed witli 2 rather long, subequal, inferior apical 

 spurs between wh'ch is a small spine, and with a short external 

 superior spur, besides their inferior borders bear 2 external spines 

 and I internal inserted a little above the inferior external one 

 Tarsi long metatarsus longer than the other articles, wholly spined 

 beneath except at apex, 2nd and 3rd joints keeled and glabrous 

 beneath. Intermediate legs similar to the anterior ones ; apical 

 spines of the femora long and movable, the external a little longer 

 than the internal one; armature of the tibiae similar but with 

 2 small superior spurs. 



Posterior femora adorned with a brown ring and a few brown 

 spots, bearing 2- very small genicular and 7-8 very small spines 

 on the internal inferior border; tibiae .spotted with brown, armed 

 on each superior margin with 25-30 spines, one of which is 

 stronger than the others and the apical one somewhat distant from 

 the preceding. Apical spurs very long, the superior internal a 

 little shorter than the metatarsus ; this one is spined beneath and 

 aimed with a small apical s^Dine. 



Length of body 13 mm. ; pronot. 5 mm. ; width of pronot. 



5 mm,; ant. fem. 11 mm. ; ant, tib. ii'5 mm, ; interm. fern. 9*5 

 mm.; interm. tib, ic mm.; post. fem. 20'5 mm.; post, tib, 21 

 mm. ; post, tarsi 8'5 mm. : post, metat. 5 mm, ; sup. int, spur 4 

 mm. ; cerci S"5 mm. ; ovipos. 5*5 mm. 



This species belongs to the group of the medium sized 

 cavernicolous species of Diestrammena [D annandalei, Kirbj', D. 

 gravelyi, Chop., etc.) ; it differs from them in the numerous small 

 spines of the inferior internal margin of the posterior femora ; be- 

 sides the shape of the subgenital plate must be ver\- different when 

 the insect is adult. 



Gen. Tachycines, Adelung. 



Tacliycines, .\di;lung, 1002, Ann. Mus. zool. Ac. Petershonrg \'II .p. s'"' 

 Diestrammena. Chopard, igig, Mem. As. Soc. Beng. VI, p. 376. 



This genus, established by Adelung for T. asvnamorus, is 

 quite well characterised by the disposition of the spines on the 

 superior margins of the posterior femora. All the variations 

 shown by the species of Diestrammena as to the form of the sub- 

 genital plate and anal valves, the presence of a process on the 7th 

 lergite of the a* , the number of spines on the posterior femora, etc. 

 may be found in the species of the present genus. A key for the 

 determination of these species has been published by me in Bull. 

 Soc. ent. Fr. [i9i6],p. 158, 



Tachycines adelungi, sp, nov, 



(PI. xxii, iigs, 23 to 25 ; pi, xxiii, figs. 26 to 28.) 



ry/>t;.— One male from Ngot bat Cave, Yawnghwe State, S. 

 Shan States, ca. 4000 ft, (F. H. Gravely, I'iii-i?). 



