THE CANADIAN ENTOMOLOGIST. 213 



Sweeping the wheat plats during April gave us the following species, 

 sorae of them being, clearly, mere visitants : 



Sciara, sps.? (2) Drosopki/a funebris, Fabr. 



Rhamphomyia., sp.? Tetanocera pictipes, Loew. 



Bibio albipennis, Say. Sepedon armipes, Loew, 



Chirojiomus, sp ? Scat op h a ga fur cat a, Say. 



Phora pachynetiroii, Loew. Scatophaga stercoraria, Linn. 



Phora sptJiipes, Coq. Hyelomyia, sps.? (3) 



Pkora, sp.? Anthofiiyia, sp.? 



Phorbia ruficeps, Zett. Schoefiot?iyza dor sal is, Loew. 



Phorbia cinerelia^ Fallen. Ccenosia verna, Fabr. 



Phorbia, sps.? (3) Cytiomyia cadaverina, Desv. 



Borborus equinus. Fallen. Myospila meditabtinda, Fabr. 



Limosifia crassimana, Haliday. Pollenia rudis, Fabr. 



Z)iastata nebu/osa,Fa.\\er). Loiichoptera piinctuin, Meig. 



Elachiptera longula, Loew. Lonchoptera lutea, Panzer. 



Oscinis coxendix, Fitch. 



The determinations of the species, included in these lists, were made 

 for me by Mr. D. W. Coquillett, through the kindness of Dr. Howard. 

 It has, untir recently, been almost impossible to get satisfactory deter- 

 minations of our smaller species of Diptera, and the foregoing lists are 

 good illustrations of the constantly increasing value, to the workers in 

 applied entomology, afforded by the Department of Lisects at the U. S. 

 National Museum. 



The University of the State of Missouri is to send an Entomological 

 Expedition into Southern Mexico this summer. It will be in charge of 

 Prof. J. M. Stedman, head of the Entomological Department, and will 

 have for its object the making of a biological (largely entomological) 

 survey of the region from Vera Cruz on the Gulf, which is in perpetual 

 tropics, to the top of the volcano Popocatepetl, which is far above the 

 perpetual snow line, and down to Acapulco on the Pacific. This will 

 give all the temperature variations from perpetual tropics to perpetual 

 snow, and will allow of the study of life zones under conditions not to be 

 found elsewhere in North America. The collection will become the 

 property of the University, which is to furnish half the expenses, the 

 other half to be borne by Prof. Stedman. 



