Uhler.] 406 [April 17, 



L. media. 



Capsus medius Say, Hemipt. New Harm., 22, 11. Capsus ro- 

 biniaz Uhler, Proc. Ent. Soc. Phila., I, 24. 



No. 125, Harris' Collection, e?, ?. "Cambridge, Mass., Aug. 1, 

 1834. On Robinia." 



This is the yellow variety of Capsus medius Say, which greatly 

 abounds during midsummer on Robinia pseudacacia. I have met 

 with the red type of this species upon blackberry bushes. 



Lygus Hahn. 



1. L. lineatus. 



Lygceus lineatus Fab., Syst. Ilhyng., 234, 152. Capsus 1/,-vittatus 

 Say, Hemipt. New Harm., 20, 5. • Calocoris lineatus Stal, Hemipt # 

 Fabr., 86, 3. 



Nos. 80 and 106, Harris' Collection. ''New Hampshire, Mr. Leon- 

 ard. Maine, Randall, July. On grass, July, 1829." 



This species is very widely distributed throughout North America* 

 Specimens have passed through my hands, which were collected in 

 Canada, British Columbia, Nebraska, and in almost all the States of 

 the Atlantic coast, as well as in Mexico. Dr. Stal places it in the 

 genus Calocoris Fieb., but it disagrees with Dr. Fieber's characters of 

 the genus. 



Determined as Capsus fy-vittatus by Mr. Say. In one pair the eyes 

 are yellow,' in the others they are black. 



2. L. dislocatus. 



Capsus dislocatus Say, Hemipt. New Harm., 21, 6. 



Nos. 48, 59, 60, Harris' Collection. "No. 48, <5, Capsus trifidus 

 Say, MSS. Sept. 15, 1827. Var. New Hampshire, Mr. Leonard." 



"No. 59, ?, Capsus lugubris Say, MSS. On grass, June, Maine 

 Randall." 



"No. 60, ?, Capsus dislocatus Say. On grass, June, Massachu- 

 setts." These names are from Mr. Say himself. 



This is a somewhat common species occurring in Canada and in 

 almost all the States east of the Rocky Mountains. I have taken 

 many pairs in coitu near Baltimore, and commonly found the males 

 black and the females yellow, with more or less of the dislocated black 

 vitta on the hemelytra. But varieties occasionally occur which look 

 very much like a cross between this species and L. lineatus Fab. 

 Other varieties have a more or less sanguineous pronotum ; still oth- 

 ers are negrine females, with only a few streaks of yellow. No. 59 



