JAMES A. G, REHlSr AND MORGAN HEBARD 



305 



Vera Cruz, Mexico, and are in the Hebard Collection ex Bruner. 

 Unfortunately a series of dried alcoholic specimens of the closely 

 related S. paronae from Tepic, Mexico, was confused with this 

 insect by Scudder and included in his type series. 



Rehn and Cockerell's Spilacris maculatus was based upon a 

 specimen m one of the earlier stages of development, determin- 

 able as an atypical example of the present race from the fact that 

 it is very brilliantly colored with annulate antemiae (as found in 

 the early stages oi furcata alone of the northern species), and was 

 taken in a region where this race alone represents the genus. 



The relationship of this geographic race to S. furcata furcata 

 and to paronae is discussed under f. furcata. The intergradation 

 between the present race and /. furcata is also discussed there, 

 and the atypical development of the race in the mountain regions 

 of the southwestern United States is commented upon. 



Measurements {in_ millimeters) of extremes 

 S. furcala furcifera showing atypical tendencies 



TRANS. AM. ENT. SOC, XL. 



