EDUARD UHLENHUTH 



539 



Fig. 10. 



Fig. 9. 



Fig. 9. Tigrinum 1917, 5 4. 25°C., 32 weeks and 2 days after metamor- 

 phosis. Only little is left of the dark background, most of the space being taken 

 up by the yellowish bands. 



Fig. 10. Tigrinum 1917, U 4. 15°C., 50 weeks and 5 daysafter metamorpho- 

 sis. Only small yellowish spots present; no bands have developed. 



