1150 
Should this supposition, as explained in the foregoing, of a regular 
and simple but complete, original colour-design, common to all 
Diptera, be true, then it must be possible to bring even the most 
complicated and variegated patterns occurring in this order, into 
connection with this fundamental design. 
The first test I was able to make in this direction, immediately 
gave the surprising result, that this comparison proved remarkably 
easy for a pattern so capricious as that of Cleitamia astrolabei, 
Fig. 9. Tephritis pantherina. 
en Tr = 
Fig. 10, Tetanocera (Dictya) umbrarum. 
consisting of an irregular central dark area, from which ten bars 
radiate to the circumference in different directions, some of them 
being straight and short, others long and curved, but all apparently 
without any regard to the course of the nervures. For comparing 
this spider-like colour-pattern with that of Tephritis pantherina [which 
