40 New York State College of Forestry 



Deltocephalus misellus Ball. 



This species has been taken in large numbers in a number of 

 different localities and has apparently a rather wide range of food 

 plants, although in Maine it was observed most abundantly upon 

 the Canadian blue grass. It is subject to considerable variation 

 in color, some of the forms being distinctly blackish while others 

 are quite pallid. Cranberry Lake, Julv 2-30, 1920. Plains, 

 Aug. 3, 1920. 



Deltocephalus apicatus Osborn. 



This species appears restricted here and elsewhere through the 

 state by the host plant. Panicum huachuchae. Cranberry Lake, 

 Barber Point, Aug. 9, 1920. Wanakena, Aug. 12, 1920. 



Deltocephalus inimicus (Say). 



This species is one of the most injurious of the leaf-hoppers. 

 Over cultivated meadows and pastures and throughout the dairy 

 region it has a very considerable economic importance. While 

 occurring on a large variety of grasses in the Cranberry Lake 

 region, there is so little of the area devoted to agriculture that it 

 may be considered of small importance. It is abundant in the 

 grasses of the campus at the Summer Camp and Ranger School 

 and in the forest around Wanakena, also in the Grasse River 

 section. It is quite extensively parasitized, both nymphs and 

 adults being noticed with parasites attached. Cranberrv Lake. 

 Barber Point, Julv 1, 1920. Wanakena, Julv 15. Aug. 12, 1920. 

 Ranger School, Julv 15, 1920. Grasse River, July 22, 1920. 

 Plains, Aug. 3, 1920. 



Deltocephalus abdominalis (Fabricius). 



A common grassland species. Cranberry Lake, July 26, 1917. 

 Wanakena, Aug. 1-7, 1917; Aug. 12, 1920. Ranger School, 

 July 15, 1920. Grasse River, July 22, 1920. Plains, Aug. 3, 

 1920. 



Deltocephalus pascuellus (Fallen). 



Very common in grasslands and sufficiently abundant to be of 

 distinct economic importance. Cranberry Lake, July 20, 1917. 

 Wanakena, Julv 15 and 29, 1920 ; Aug. 12, 1920. Raiiger School, 

 July 15, 1920. 



Deltocephalus melsheimerii (Fitch). 



This species appears to be restricted for this area to a species 

 of Bromus and occurred abundantly in the Plains, Aug. 3, 1920, 

 and less commonly on Buck Island, Aug. 9, 1920, and the " French 

 Camp " near Wanakena, Aug. 12, 1920. 



Deltocephalus striatus (L.) (= affinis G. & B.). 



This species is very much less common than in the cultivated 

 parts of the country where it is an abundant species in pastures 

 and meadows. Cranberry Lake, July 5, 1920. 



