38 I^ew York kSfiitc CoUcgc uf Forestry 



with these adults, and which resemble very closely those of Tham- 

 notettex kennicotti, were thought to be the yovuig of this species; 

 and it is possible that the nymphs of the two forms are quite 

 similar. One such nymph was kept in a cage and fed on maple 

 leaves for about four weeks but it did not mature. Wanakena, 

 Aug. 1-7. 1917; Aug. 12, 1920. Ranger School, July 15, 1920 

 (adult). 'Grasse River, July 22, 1920 (adult). Plains, Aug. 3, 

 1920. 



Scaphoideus auronitens Provancher. 

 Nymphs, Plains, Aug. 3, 1920. 



Scaphoideus scalaris Van Duzee. 



This is a very common species west bat occurs quite rarely in 

 this region, only one record having been made. Cranberrv Lake, 

 Aug. 1, 1917. 



Scaphoideus lobatus Van Duzee. 



Usually taken on grasses in open wood. Cranberry Lake, Aug. 1, 

 1917. 



Scaphoideus productus Osborn. 



This appears to be about the most common species of the genus 

 for this region, much more plentiful, if we can judge by our col- 

 lection, than the following species which is the most abundant 

 one for the countrv at large. Cranberry Lake and Barber Point, 

 July 25, 28. 1917- Sept. 15, 1919. Wanakena, Aug. 1-7, 1917; 

 Aug. 12, 1920; (nymphs) July 15 and Aug. 3, 1920. Bear Moun- 

 tain, Aug. 15, 1920. 



Scaphoideus immistus (Say). 



Taken very rarely, although it is by far the most common and 

 generally distributed species of the genus in the U. S. It is taken 

 on willows and grape and these are probably to be included among 

 its host plants. Cranberry Lake, Aug. 5 and 10, 1917. 



Platymetopius acutus (Say). 



A common and very widely distributed species equally at home 

 in open fields or forest, on low land or hill top, evidently having 

 a great latitude of food plants. It is perhaps the most universally 

 distributed of any species of leaf-hopper taken in this region, 

 appearing in almost every sweeping for almost every habitat 

 studied. Cranberrv Lake, Barber Point, Jidy and Aug., 1920. 

 Wanakena, Aug. 12, 1920. 



Platymetopius acutus (Say) var. cinnamomeus Osborn. 



This variety appears to grade into the typical form, but nymphs 

 which have been reared to this form seem to have a fairly distinct 

 marking and, as such nymphs are most abundant in boggy loca- 

 tions and seldom taken in higher altitudes, it would appear that 



