118 
Psyche 
[December 
Holotype and three paratypes labelled “VIII. 29, Huach. 
Mts. Ariz.” and one without label are in the U.S.N.M. One 
female from the “Huach. Mts., Ariz,” is in the writer’s col- 
lection and evidently was collected with the types. There 
is no variation in these six specimens. Niger n. sp. ap- 
proaches basalis in the punctation of the elytra, but this 
character is very variable in helvolus and the European 
ferrugineus. 
For the privilege of examining material the writer is 
greatly indebted to E. A. Chapin (U.S.N.M.), P. J. Darl- 
ington (M.C.Z.), E. C. Van Dyke (Cal. Acad. Sci.), E. T. 
Cresson, Jr. (Phil. Acad. Sci.), H. C. Fall, and C. A. Frost. 
