Occasional Papers of the Museum of Zoology 15 



ference of habitus, arising from the characters mentioned and 

 others less readily definable in words, without reference to 

 locality of collection. The varieties a and b of Stal fall under 

 subsp. kahnii, var. c under subsp. angnstomarginatus. These, 

 with var. melanodermiis Alontd. and a number of undescribed 

 varieties, are color forms of more or less doubtful value, to 

 be discussed in another place where further data on the sub- 

 species will be given. 



Typical examples of the new subspecies will be placed in the 

 Museum of Zoology of the University of Michigan and in' 

 the United States National Museum. 

 Lygacns bicnicis Say. 



B. C— Saanich Dist., Y. I., Aug. 16, 1917 (W. D.). 

 Nysius thymi (Wolff). 



B. C. — Vernon, Aug. 10, 1917 (M. H. R.) 



Barber has kindly verified this determination. 

 Nysius ericae (Schilling). 



B. C. — Saanich Dist., V. I., Aug. 21, Nov. 13, 1917 (W. D.) ; 

 Vernon, Aug. 10, 1917 (M. H. R.). 



I\Ir. Ruhmann writes that at Vernon this species appeared in 

 great numbers, swarming over the trails and entering houses. 

 For a few days the walls of the houses inside and out were 

 covered with the insects and complaints were made that they 

 bit children, altogether a most unusual occurrence. 

 Ischnorrhynchus franciscamis (Stal). 



B. C— Saanich Dist., V. I., Apr. 27, 1918, Aug. 18, 1917 

 (W. D.) ; Shawnigan, V. I., July 21, 1918 (W. D.) ; 

 Vernon, Mar. 6, 1915 (M. H. R.). 



I feel some doubt regarding the relations between francis- 

 camis, rcscdac (Panzer), and geminatus (Say). The speci- 

 mens recorded here agree with Stal's description and they 

 have been determined by Barber, Horvath's characterization 



