EEFERENOE LIST OF LETTEES IN PLATE. 



a. Costal nervure. 



h. Sub-costal nervure. 



i\ W, ¥, ¥, ¥. Sub-costal nervules, 



c^, c^. Discoidal nervules. 



d. Median nervure. 



d}, d?', d^. Median nervules. 



e. Sub-median nervure. 

 /. Internal nervure. 



^^ .9'^ 9^- Disco-cellular nervules. 



h. Interno-median nervule. 



k. Precostal nervure. 



o 



The letters correspond in each figure. 



