OF WASHINGTON, VOLUME XIX, 1917 115 



Atlanticus americanus Saussurc. 



Plummers Island, August 11, 1907, McAtee; Cabin John Hun, 

 Md., September 19, 1911, W. T. Davis (Rehn & Hebard, 1916 



(l),p. 81). 



Atlanticus davisi Rehn and Hebard. 



Plummers Island, Md., July 5, 1905, E. A. Schwarz; Great 

 Falls, Va., June 16, 1910, W. T. Davis (Rehn & Hebard, 1916 



(1), p. 67). 



Atlanticus testaceus Scudder. 



Common; Plummers Island, April 21 (nymph) to September 

 15; Cabin John Run, Md., June 20, 1911, W. T. Davis; Glen 

 Echo, Md., July 10, 1914, Caudell (Rehn & Hebard, 1916 (1), 

 p. 53); Chain Bridge, Va., May. 18, 1913, W. D. Appel. 



Camptonotus carolinensis Gerstaecker. 



Fairly numerous; Plummers Island, July 3 (nymph) to Sep- 

 tember 17; this leaf-rolling species sometimes utilizes as a sub- 

 stitute for cocoons of its own making, the compartments in the 

 seed pods of Staphylea tnfolia. Great Falls, Va., July 29, N. 

 Banks. 



Ceuthophilus blatchleyi Scudder. 



Plummers Island, September 2, Caudell; October, 1909, H. S. 

 Barber. 



Ceuthophilus gracilipes Haldeman. 



Fairly common; Plummers Island, May 8 (nymph) to Sep- 

 tember 22 (adult and nymphs); Cabin John Run, Md., Septem- 

 ber, 1911, W. T. Davis (Rehn & Hebard, 1916, (2), p. 27); Vir- 

 ginia n,ear Plummers Island, April 28 (nymphs) to October 6. 



Ceuthophilus neglectus Scudder. 



The dominant species of the genus; Plummers Island, March 

 28 to October 26; in copula, September 24, 1905, eggs laid, Sep- 

 tember 29, 1912; nymphs, June 15, 1915 (in burrows of ground- 

 hog), H. S. Barber; October 11, 1906, Caudell; Jacksons Island, 

 Md.. August 27. 1902, H. S. Barber; Dalecarlia Reservoir, D. C., 

 April 13, 1913, W. D. Appcl; Great Falls, Va., September 12, 

 1 ( .12, Caudell; Black Pond, Ya., September 21, 1911, W. I). 

 Appel; Bellview to Difficult Run, Va., September 19, 1916, Cau- 

 dell: Virginia near Plummers Island, April 30, 1905, Me Alec, 

 September 22, 1905, D. H. demons; September 30, 190.") (in 

 ) H. S. Barber; November 5, 1905, F. Knah. 



