Oct.,1917 Bulletin of the Brooklyn Entomological Society 81 



mens show a gradation into the dark forms of amoenus and thus 

 the two may prove to be but varieties of the same species. 



Records: June 13 to June 28, Batavia, N. Y. ; July 4-5, Four 

 Mile, N. Y. (H. H. Knight). 



Neoborus amoenus Renter. Most abundant on Fraxinus 

 americana and F. pennsylvanica and found sparingly on F. 

 nigra. The species has two broods, the first adults maturing 

 about June 20 in western New York and continuing on the trees 

 up till frost or the middle of September. 



Record: June 20 to Aug. 24, Batavia, N. Y. ; Sept. 14, Wyo- 

 ming, N. Y. (H. H. Knight). 



Neoborus palmeri Renter. This form has been regarded as a 

 variety of amoenus but it is undoubtedly a good species. The 

 writer has found it only on the black ash (Fraxinus nigra) and 

 apparently coming earlier than X. plagifer and X. commissuralis. 



Records: 5 5 July 30, 2 $ Aug. 6, Batavia, N. Y. (H. H. 

 Knight). 



Neoborus pubescens new species. Very similar to certain dark forms of 

 amanus, but distinguished from that and other species in the genus except 

 tricolor by the presence of distinct pubescence. 



Length 4.5-4.8 mm. Antennae and legs pale. Head more sharply pro- 

 duced and the front more vertical and flattened than in amoenus; black, 

 in the female the tips of the lorae and juga, each side of the median line 

 on the front, pale. Pronotum with sides distinctly carinate only on the 

 apical half; black, top of the collar, rather widely on the median line of 

 the disk, one and sometimes two rays behind each callus, pale yellow; 

 more coarsely punctured than in amcenus. Scutellum yellow, black at the 

 middle of the base and on the mesoscutum; sternum and pleura black, 

 orifice pale. Hemelytra pale, inner half of the clavus, along the claval 

 suture, large apical spot on the corium and slightly invading the embolium, 

 black. Membrane pale, in the female dark fuscous to black within the 

 cells and margining the veins; in the male dark fuscous and extending 

 to include the middle of the membrane. Venter black, sometimes paler 

 in the female. 



Holotype: (^ July 23, Ithaca, New York (H. H. Knight) ; 

 author's collection. 



Allotpye: taken with the type. 



Paratypes: 3 $ July 23, i J* 31 $ July 26, Ithaca, N. Y. ; 2 $ 

 Aug. I, Batavia, N. Y., collected by the writer. 2 J^ i 5 June 15, 

 Woodworth Lake, Fulton County, N. Y. (C. P. Alexander). 5 

 July 3, Hanover, New Hampshire (C. W. Johnson). 



