HIPPODAMIA. 



47 



The pronotum is much less frequently subject than that of H. conver- 

 gens (see fig. 30) to a reduction of pigment in such a way that the con- 

 vergent light mark is confluent with the light margin. This was found in 



FIG. 29. Variation of elytral pattern in Hippor/amiaspuria. 





a 



FIG. 30. Variation of pronotal pattern in Hippodfimia xpuria. Mode = c tx> .?. 



FIG. 31. Variation of head-pattern of Hippodfimia xpuria from Dilley, Oregon. 6 = mode. 



only 5 in 759 at Fairfield. On the other hand, there was one specimen in the 

 Fairfield lot in which the convergent mark extended to the caudal margin 

 of the pronotum and another in which it very nearly did so. In each of 



