I 



\'ol. XXviii] ENTOMOLOGICAL NEWS. 4I9 



iial Econ. Ent., Aug. '15, p. 421 ; Oct. '16, p. 456). but Mr. F. 

 Knab, U. S. National Museum, has pronounced the species 

 new. It is evidently closely allied to P. pisticoides Will, and 

 to P. pistica Will. P. calif ornica is recognizable in the female 

 through the wholly shining abdomen clothed with white and 

 light colored pile ; in the male, through the dull bands at the 

 base of the segments and in the longer pile. 



The author is indebted to Mr. F. Knab for helpful sug- 

 gestions in drawing up the description. 



Preliminary List of North Dakota Wasps exclusive 



of Eumenidae (Hym.). 



By O. A. Stevens, Agricultural College, North Dakota. 



While collecting flower-visiting insects in the State the past 

 seven years, the writer has taken a considerable number of 

 wasps, although giving special attention to bees. It has been 

 possible to have nearly all of these identified, and especially 

 as very little has been published concerning the insects of the 

 State, it seems worth while to present the list at this time. 

 Many additional species will doubtless be found by more thor- 

 ough collecting, especially in the region of the Missouri River. 



From the wasps thus far collected, five new species have 

 been described as follows : 



Cerccris dakotcnsis Banks — Can. Ent., vol. 47, p. 402, 191 5. 



Cerceris stigmosalis Banks — Ent. News, vol. 27, p. 64, 1916. 



Xylocclia striata Mickel — Ann. Ent. Soc. Am., vol. 9, p. 350, 

 1916. 



Thyrcopus kiio.vcnsis Mickel — Trans. Am. Ent. Soc, vol. 42, 

 p. 424, 19 1 6. 



Crahro prolctarins Mickel — Trans. Am. Ent. Soc, vol. 42, 

 p. 426, 1916. 



The identifications of the Sphecidae are by Dr. H. T. Fer- 

 nald, the Psammocharidae and Philanthidae by Mr. Nathan 

 Banks, the Bembecidae in part by Dr. J. B. Parker; all others 

 by Mr. C. E. Mickel. excepting the Vespidae, for which the 

 writer is responsible, a ^d the genus Mimosa. I am also greatly 

 indebted to Mr. Micl cl for revising the arrangement and no- 

 menclature of the list. 



