OF WASHINGTON, VOLUME XVII, 1915 189 



Dead Run, Fairfax County, Va., May 28, 1914, May 23, and June 

 9, 1915. Mr. Knab is of the opinion that these two forms are but 

 color-variants of one species. 



THREE INTERESTING ORTHOPTERA FROM THE VICINITY 



OF WASHINGTON, D. C. 



BY A. N. CAUDELL, Bureau of Entomology. 



To our local fauna three species of Orthoptera are to be added. 

 One, Cryptocercus punctulatus Scudder, was taken on Cupid's 

 Bower Island, Md., a small island in the Potomac River some dis- 

 tance below Great Falls. Three specimens of this interesting 

 roach have been taken, two by H. S. Barber on May 23 of the 

 present year and one by R. C. Shannon on May 31. These 

 roaches were taken in decayed pine logs. This species seems to be 

 very local in occurrence but enjoys a wide distribution, ranging 

 from the Atlantic to the Pacific and from Canada on the north, 

 south to about the 34th parallel, the furthest southern record, 

 I believe, being Rome, Georgia. 



Another insect not at all common in the regions surrounding 

 Washington is Melanoplus collinus Scudder. Numbers of both 

 sexes of this grasshopper were taken at Great Falls, Virginia, 

 on September 12, 1912. It occurred in some numbers in the open 

 woods just below the picnic grounds at the Falls. 



Melanoplus punctulatus Scudder occurs in pine woods and has 

 been taken but once by me in the District, a single male near 

 the upper reservoir north of Georgetown. A male was collected 

 on Plummer's Island, Md., by Douglas demons on August 

 11, 1905 and the species has also been taken at Falls Church, Va. 



MIGRATING ARMIES OF MYRIOPODS. (A CORRECTION). 



BY H. S. BARBER, Bureau of Entomology. 



Mr. R. V. Chamberlain of the Museum of Comparative Zool- 

 ogy has kindly examined specimens of the Myriopod from Huin- 

 boldt Co., Cal., mentioned on pp. 121-122 of this volume but his 

 reply was received after the number had gone to press. He writ <> 

 that the specimens are immature and cannot be positively de- 

 termined but belong to the leptodesmid genus Chonaphe and are 

 probably C. armata (Harger.) 



