THE CANADIAN ENTOMOLOGIST 



273 



observations on the relation between climate and characters, it may be of in- 

 terest to note that in a considerable series of Chloralictus, the te2;ula^ are dark 

 in those species which come from the north and the mountains, light in those 

 from the south and lowlands. Thus: 



Teguhe dark. //. cressonii, nigroviridis, viridatus, perdifficilis, versans, 

 niidosensis, horfensis, planatus, etc. 



Tegula? light. //. semibrunneus, sparsiis, fioridanus, ashmeadii, versatns, 

 ^ephyrus, gcmmatiis, bruneri, exiguiis, etc. 



A LIST OF SYRPHID^ OF NORTHERN INDIANA. • 



BY M. R. SMITH, RALEIGH, N.C. 



The following is a list of Syrphids collected in the vicinity of Plymouth, 

 Indiana, during the summer of 1918. As the writer does not think he will have 

 opportunity to collect in this region again, this short list is being published 

 with the hope that it may be of interest to the Syrphidologist and to those 

 interested in working up the State's fauna. 



To Mr. J. AI. Craig much credit is due for assistance in collecting. 



The writer also wishes to acknowledge his indebtedness to Mr. C. L. Fluke 

 for a number of the determinations. 



UPLAND SPECIES. 



Eristalis tenax Linn. 



E. arbustorum Linn. 



E. transversus Wied. 



E. dimidiatus Wied. 



Sphaerophoria scripta Linn. 



5. cylindrica Say. 



Paragiis bicolor Fabr. 



P. tibialis Fabr. 



P. angnstifrons Loew. 



AUograpta obliqua Say. 



Mesogramma marginata Say. 



M. geminata Say. 



M. poUia Say. 



Syrphus ribesii Linn. 



5. americanus Wied. 



5. xanthostomits Williston. 



5. abbreviatiis Zett. 



Syritta pipiens Linn. 



Milesia virginiensis Drury. 



Spilomyia h ami f era Loew. 



5. longicornis Loew. 



Baccha fascipennis Wied. 



Xantho gramma flavipes. 



December, 1919 



MARSH SPECIES. 



Helophilus si milts Macq. 

 H. latifrons Loew. 

 H. divisus Lcew. 

 H. chrysostomns Williston. 

 H. conostomus Williston. 

 H. laetiis Loew. 

 Vohicella evccta Walker. 

 Xylota frandulosa Loew. 

 X. ejitncida Sixy. 

 Tropidia quadrata Sa^.-. 

 T. calcarata Williston. 

 Pyrophaena rosariim Fabr. 

 P. granditarsus Fabr. 

 Platychirtis quadratus Say. 

 P. hyperboreiis Staeger. 

 Melanostoma mellimim Linn. 

 M. obscurum Say. 

 Neoascia globosa Walker. 

 Chrysotoxiim pubescens Loew. 

 Pterallastes thoracicns Loew. 

 Eristalis bastardi Macq. 

 E. flavipes Walker. 



