PROC. ENT. SOC. WASH., VOL. 23, NO. 9, DEC., 1921 211 



Mountain, near Hagerstown, Md., July 6, J. A. Hyslop; Hagers- 

 town, Md., June 20; Harpers Ferry, W. Va., May 19, Hubbard 

 and Schwarz; Landisburg, Pa., June 30, J. N. Knull; Bear 

 Swamp, near Ramsey, N. J., Aug. 28, Amer. Mus. Nat. Hist.; 

 New Baltimore, N. Y., July 10, E. B. Southwick; Portland, 

 Conn., May 25 on white pine, F. W. Harris; Beverly, Mass., 

 Cornell Univ., lot 200, Crew; Toronto, Ont., May 22, R. J. 

 Crew. Females North Saugus, Mass., June 15, D. H. 

 demons; Amherst, Mass., June 1, Mass. Agr. Coll.). 



Type. Male, allotype and 2 male paratvpes, Cat No. 24561, 

 U. S. N. M. 



Type locality. South Mountain, Md. 



This species, which is named in honor of Mr. J. A. Hyslop, 

 runs to Sagittarius Leconte, in Candeze's key (Mon. des Elateri- 

 des, vol. 3) and is often found in collections labelled as that 

 species. The two are similar in habitus, but show the following 

 differences: (1) as a rule Sagittarius Lee. is larger (12.5-13.5 mm. 

 long); (2) has the posterior angles more divergent than the side 

 of the prothorax; (3) has the free margin of the frons more 

 broadly rounded and less precipitous medianly; (4) has the pro- 

 thorax relatively broader, and (5) each lateral lobe of the male 

 aedeagus has a prominent acuminate angle on its outer margin 

 near the apex, whereas in hyslopi the lateral lobes (see Fig. 1) 

 are entire and have their sides subparallel. The aedeagus of 

 pertinax Say resembles that of the present species very closely, 

 but in hyslopi the lateral lobes are apically broader and more 

 robust than in pertinax. The very prominent parantennal 

 area and deeply incised parantennal foveae easily distinguish 

 hyslopi from all other known American species except Sagittarius 

 Lee. 



The species seems to be confined to the northeastern part of 

 this country, and southeastern Canada. In addition to the 

 localities given above, specimens have been seen by the writer 

 from Marion, Mass., Mastic, L. I., and Trenton, N. Y., Jack- 

 son's Id., Plummer's Id., Wolfsville and Meyersville, Md., 

 Washington, D. C., and Black Mountains, N. C. 



THE PERIODICAL CICADA, 1919; BRIEF NOTES FOR THE 

 DISTRICT OF COLUMBIA REGION. 



BY \V. L. McATEE. 



Perusal of two papers 1 relating to the 1919 occurrence <>t" 

 Brood X of the Periodical Cicada suggested to the writer the 



'Allard, H. A., Am. Nat., Vol. 54, pp. 545-551, Nov.-Dec., 1920, and St. 

 George, Raymond A., Proc. Enr. Soc. Wash. Vol. 22, pp. 227 2.11 (Dec., 1920). 

 Feb. 10, 1921. 



