PLATE LXtI. 
Thalestris rufoviolascens, female. 
Fig. 1. Adult animal. 
2. Anterior antenna. 
3. Mandible. 
4. First foot-jaw. 
5. Second foot-jaw. 
6. First foot. 
7. Fourth foot. 
8 
. Fifth foot. 
Thalestris helgolandica, female. 
9, Anterior antenna. 
10. Inner branch of posterior antenna. 
11. Second foot-jaw. 
12. First foot. 
13. Third foot. 
14. Fifth foot. 
