PROCEEDINGS 



OF THE 



ENTOMOLOGICAL SOCIETY 



OF WASHINGTON. 



VOL. VI. JULY, 1904. No. 3. 



The following six papers have been presented for publica 

 tion : 



ON THE SPECIES OF SPHENOPHORUS HITHERTO CON 

 SIDERED AS SIMPLEX LECONTE.* 



By F. H. CHITTENDEN. 



Since the publication of Sphenophorus simplex by LeContef 

 there has been discovered, and is present in most large collec 

 tions, a series of a considerably larger species which at first 

 glance, with exception of an occasional abnormal individual, can 

 readily be separated from the true simplex which was described 

 from San Juan and Fort Yuma, California. The size of the ser 

 ies of simplex which Dr. Horn had at hand when he reviewed 

 the genus Sphenophorus in 1873,! was less than a third of an 

 inch. The other species which the writer has mentioned fre 

 quently measures half an inch and sometimes a little more. It is 

 true that this second species, to which I propose to give the name 

 of mormon, since it is found chiefly in Utah, is very closely re 

 lated to simplex, as evidenced by the similarity of the sexes, and 

 it is evident also that they had a common ancestor, or one may 

 possibly be an offshoot of the other. During July, 1903, Mr. H. 

 F. Wickham captured still a third form belonging to this group, 



*This paper was presented for publication with No. 2 of the Proceed 

 ings but excluded for lack of space. Publication Committee. 



tProc. Acad. Sci. Phila., 1859, P- 7- 



+ Contributions to a Knowledge of the Curculionidae of thellnited States, 

 P- 4*3- 



