214 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



It is extremely interesting to note that all of the specimens 

 which have reached America, are Diprion sim.ile in the most 

 restricted sense and that there is very little variation in color 

 or structure among all the adults examined. This may be ex- 

 plained by the fact that practically all the importations have 

 come from Holland (probably from one nursery) indicating that 

 our form is an inbred varietv. 



RHIZOBIUS NOT RHYZOBIUS. 



BY E. A. SCHWARZ 



In his "Illustrations of British Entomology," 1831, Vol. 4, 

 Coleoptera, page 373, Stevens erected in a synoptic table of 

 genera the genus Rhizobius, whereas, subsequently (1. c., page 

 396) in the full description of the same genus with indication of 

 the type species he spells it Rhyzobius. Since at the same place, 

 Stevens states: "The only indigenous species grows on the roots 

 of plants, whence the name of the genus from the mss. of Leach," 

 it is evident that the spelling "Rhyzobius" is merely a typographi- 

 cal or clerical error and that the spelling "Rhizobius" should be 

 preferred. 



Two HUNDRED AND NINETY-SEVENTH MEETING 

 OCTOBER 5, 1916. 



The 297th regular meeting of the Society was entertained 

 by Mr. E. A. Schwarz at the Saengerbund Hall October 5, 1916. 

 There were present Messrs. Abbott, Baker, Banks, Borden, 

 Boving, Busck, Caudell, Duckett, Ely, Fisher, Gahan, Greene, 

 Hutchinson, Jennings, Knab, Kotinsky, Morrison, Paine, Pierce, 

 Popenoe, Rohwer, Sanford, Sasscer, Schwarz, Shannon, Snyder, 

 Walton, and Wood, members, and Messrs. Frank R. Cole, Thomas 

 Kehler, Josef N. Knull, and Herman M. Bernelot-Moens, visitors. 



The following program was presented : 



A NEW SPECIES OF XYLOTRECHUS. 



(Coleoptera; Cerambycidae .) 



BY W. S. FISHER, 

 Branch of Forest Insects, Bureau of Entomology. 



The following species has been confused in the collections with 

 quadrimaculatus Hald., and the description is presented at this 

 time so that the name can be made available for discussion in 

 economic papers. 



