JAMES A. G. REHN AND MORGAN HEBARD 299 



this species. In New England the species is small (average 

 about 28), in southward distribution along the Atlantic coast a 

 moderate increase in size is found (average on Georgia coast 

 about 31). In the latitude of New England little variation in 

 size is found westward to the edge of the Great Plains, in southward 

 distribution in the middle west an even greater increase in size is 

 found from southern Kansas to northern Texas (average about 32) 

 than on the Atlantic coast. From Georgia westward to the 

 area of intergradation with /. furcifera scarcely any variation is to 

 be found but the intermediate material is very slightly smaller 

 (average about 29). West of these regions the species is almost 

 wholly confined to the mountains and has been found from western 

 Idaho to British Columbia and southward to south-central Cal- 

 ifornia; material from these regions is somewhat aberrant, slightly 

 more robust than is usual in eastern material and not large (aver- 

 age about 29 mm.). 



The length of the ovipositor by the greatest breadth of the same 

 in females from the following localities is as follows. Marion, 

 Massachusetts, 6.3 by 1.9 to 6.7 by 2; Saunderstown, Rhode 

 Island, 6 by 2 to 6.1 by 1.8; Chestnut Hill, Pemisylvania, 6.2 by 

 1.8 to 6.4 by 2; Washington, District of Columbia, 6 by 2 and 6.2 

 by 1.8; Isle of Hope, Georgia, 6.8 by 2 to 6.9 by 2.1; Thomas- 

 ville, Georgia, 7 by 2; St. Louis, Missouri, 6.5 by 2 to 6.7 by 1.9; 

 Dallas, Texas, 7.3 by 2.1; Weatherford, Texas, 7.1 by 2.2; Beau- 

 mont, Texas, 6.2 by 2; Pullman, Washington, 6.5 by 2.1 to 6.7 by 

 2; Santa Clara Co., California, 6.9 by 2.1. Intermediate ma- 

 terial between f. furcata and f. furcifera, Brownsville, Texas, 6.1 

 by 2.1 to 6.7 by 2. 



Though normally miiform green in general coloration a number 

 of specimens in the large series before us are more or less suffused 

 with brown and in a single specimen the general coloration is 

 russet marked with much darker bro\vn. Only occasional speci- 

 mens of the present species have the lateral angles of the prono- 

 tum outlined in yellowish. Nymphs of the species are frequently 

 highly colored with strongly amiulate antennae. 



The present species appears in New Jersey (and probably in 

 other regions as well) over a month later in the season than *S. 

 cunicauda. The present insect is somewhat more common than 



TRANS. AM. ENT. SOC, XL. 



