136 Records of the Indian Museum. [VOL. XII, 1916.] 
The females have the triangles of the hind-wing crossed in 
every case. Those of the front-wing free except in the case of the 
left fore-wing of the paratype where the triangle is crossed. The 

bs 
Fic. 2.—Davidius davidi assamensis, subsp. nov. 
a. Anal appendages @: 6. Lateral view of genital structures on 
abdominal segment, 2 ¢ . 
genus Davidius ranges from China and Japan to N. India, Assam 
and Tonkin. The two species noted above are the only forms 
recorded from the Indian Empire. 
The holotypes ~ @ will be deposited in the Indian Museum. 
