1878.] 395 [Uhler. 



sections of the United States, and is found as far north as Lake Win- 

 nipeg. One specimen without a number. 



Nysius Dallas. 

 N. thymi. 



Nysius thymi Wolff, Icones Cim., fig. 143. 



No. 123, Harris' Collection. "Cambridge, Mass., Sept. 25, 1832." 

 " Coreus catenarius Say, MSS." 



Specimens of this insect, collected in Walrussia, at the extreme 

 northern part of the Mackenzie River region, in Canada, and in 

 most of the States east of the Mississippi basin, as well as in New 

 England, have been sent to me for examination. Its introduction 

 from the Eastern continent to this, or the converse, may have been 

 across Behring's Strait, as it is found in Siberia and Kamtschatka. 

 Dr. Stal has examined specimens from Sitka. Mr. Robert Kennicott 

 secured specimens in British and Russian America, which are now 

 the property of the Smithsonian Institution. During some summers 

 it has been very abundant near Baltimore upon various plants and 

 bushes around the edges of fields and meadows. 



Cymus Hahn. 

 C. clavulus. 



Cymus claviculus Hahn, Wanz. Ins., i, 77, tab. 12, fig. 44. 

 No. 79, Harris' Collection, ?. " April 20, 1822." 

 " Coreus striatipennis Say, MS." 



Evidently introduced from Europe. It is now common in New 

 England, New York, Pennsylvania, New Jersey and Maryland. 



No. 142, from " Alabama, Prof. Hentz, February," is a neat little 

 Pachymerid of new genus and species; but the specimen is too poor 

 to bear description. 



PHYTOCORIDtE. 



Minis Auctor. 

 M. instabilis. 



Miris instabilis Uhler, Proc. Bost. Soc. N. H., 1871, p. 104. 



Form and general appearance similar to M. virens Linn. Green, 

 greenish-testaceous, or pale dull straw-yellow, clothed with close yel- 

 low pubescence. Head broad conical, having a blackish vitta each 

 side, which is usually continued backward over the pronotum and 

 scutellum to the apex of the corium; apex of the head a little up- 



