114 



PSYCHE. 



[September 1897. 



to approach during the warmer part of 

 the day, when it often flies away to a 

 distance of several rods and circles 

 about, returning to the place whence 

 it started, or dances up and down in the 

 air, snapping loudly. The 9 sometimes 

 makes a soft flutter or shuffle of wings 

 ill flight, probably corresponding to the 

 snapping of the $ , and both sexes can 

 fly silently at will. I have seen the $ 

 stridulate when at rest, also, by rubbing 

 the hind thighs against the tegmina, 

 producing a "scritching " sound audible 

 at a distance of three or four feet. The 

 intercalary vein is toothed, in a low but 

 continuous series, for its entire length in 

 the ^ , and on the distal half or more in 

 the- 9 , in which the teeth are lower and 

 barely perceptible. 



It begins to appear in the winged 

 state about July 15, on which date I 

 have taken it in northern Vermont, 

 and it may be found during the rest 

 of the season. Henshaw has taken it 

 at Bar Harbor, Me. I have specimens 

 from the following localities : Deering, 

 Portland, Norway, and Speckled Mt., 

 Stoneham, Me. ; Keene (Pi-of. Weed), 

 No. Conway, Pinkham Notch, Mts. 

 Pequawket and Washington, N. H. ; 

 Jay, Vt. ; Greylock Mt., Adams, and 

 Palmer, Mass. ; and Canaan, Ct. 

 Harris described it under the name of 

 latipennls, and there are two specimens 

 in M. C. Z. labeled Cambridge, indi- 

 cating that it may be found in the 

 vicinity of Boston, though I have yet 

 to meet with it there personally. 



NOTES OX THE GENUS DELTOCEPHALUS. 



BY CARL F. BAKER, ALA. POLYTECHNIC INST., AUBURN, ALA. 



The following notes are called forth 

 bv Prof. Osborn's late "Review of the 

 Genus Deltocephalus " in Proc. Iowa 

 Acad. Sci., more especially by the 

 changes he has proposed in connection 

 with the species described in the Prelim. 

 List Hemip. Colo. The new species in 

 the latter work were so described on 

 my own authority and the true type 

 specimens are in my collection. Hence 

 I may be supposed to know why they 

 were called " new." 



Prof. Osborn's generalizations on the 

 genus Deltocephalus seem to me at 

 least very premature, especially in 

 consideration of the fact that less than 



a third of the American species occur- 

 ring in collections were known to him 

 at the time his paper was written. It 

 seems questionable from a study of all 

 the species if the genus can be naturally 

 separated into groups along the lines he 

 has indicated. Likewise, the excluding 

 from the genus of simplex, coqiiilletii 

 concentricus, bimaculatus and flavo- 

 virens seems to me decidedly premature. 

 His reconstruction of the genus, based 

 upon a study of but a small proportion 

 of our species, cannot but prove unten- 

 able. The genus, as it occurs in 

 Europe, so far as our present knowledge 

 goes, is a fairly homogeneous group. 



