114 ENTOMOLOGICAL SOCIETY 



EXPLANATION OF PLATE VI. 



Fig. I. — Position of larva of Lysiphlehus tritici in body of wingless 

 adult female of Toxoptcra graminum, just before beginning its revolu- 

 tions for fashioning the body of the Toxoptera into a pupal envelope, 

 II a. m. 



Figs. 2-7. — Some of the positions assumed by the Lysiphlebus larva 

 between 11 a. m. and 11 :35 a. m., during which time it made three com- 

 plete revolutions. 



Figs. 8, 9. — Positions during and at completion of eighth revolution, 

 12:11 p. m. 



Fig. 10. — Position at completion of ninth revolution, showing con- 

 traction of the larva, 12:15 p. m. 



Fig. II. — Position at 12:20 p. m. 



Fig. 12. — Position at 12 :22 p. m. 



Fig. 13. — Position at 12 -.27 p. m. 



Fig. 14. — Position at 12 :32 p. m. 



Fig. 15. — Position at 12:32^ p. m. 



— Mr. Schwarz exhibited and remarked upon some intro- 

 duced Coleoptera to show the spread that had taken place 

 lately. Baris scolopacea Germar, brought in some years ago, 

 was known only from Philadelphia until this year, when it 

 was found near Washington, D. C. As it is known to feed 

 mostly on maritime plants it is not likely to be of economic 

 importance in this country. 



The second species, Phytonomus nigrirostris Fab., is either 

 a circumpolar species or it was introduced into the northern 

 States long ago, for as far back as the records go it has always 

 been quite common, ranging from New England westward to 

 Michigan and Minnesota. Some years ago it was found by 

 Mr. Schwarz at Fortress Monroe, Va., and recently near Wash- 

 ington, D. C. (Fort Reno and Plummers Island) feeding on 

 clover leaves. Species introduced into the Boreal zone have 

 not, in his opinion, the power of spreading southward, as can 

 be exemplified by a large number of species, including tlie 

 gipsy moth. In this instance it seems that we have to do with 

 another importation at some harbor south of New York. 



The last species, Aphodius prodromus Brahm, was, like the 

 preceding, not many years ago introduced into the New Eng- 



