378 THE CANADIAN ENTOMOLOGIST. 



l\ige 588, before Phiiia w'-cxV the following : 



Philhelius Stephens, Entom. (Newman's), Vol. 1, p. ?, 1841,* 2 

 species. Type, Musca citrofasciata DeGeer, by present designation. 

 Syn., Xanihograniina Sciiiner, i860." 



Page 595, l)efore Prodiplosis insert the following : 



" Prodiamesa Kieffer, Gen. Ins., Dipt., Chiron., p. 37, 1906, 7 

 species. Type, Diamesa prcecox Kieffer, the last species, by original 

 designation.'' 



Page 597, under Psilocephala^ after designation add, "Syn., 

 Dialineura Rondani, 1856." 



Under Fsilotanypus, change " 7 " to " 3 ''; " beihis Loew," to 

 '•^ occideiitalis Coquillett," and " first " to "second" (the other four species 

 were doubtfully referred to this genus, according to the two footnotes — 

 moreover, bellus belongs to the genus Procladius). 



Page 600, Rhy7ichocephahis. (Verrall, in his British Flies, Vol. 5, 

 1909, p. 445, separates this genus from Nemestrina by a character not 

 used by previous writers — the presence of a vein between the third and 

 fifth posterior cells in the latter genus and its absence in the former ; but 

 the one employed by Rondani, Schiner and later continental writers — the 

 multiplicity of accessory cells in the wings of Nemestri7ia, and their 

 absence in those of the other genus — is a far better character.) 



Page 610, under Syinphoromyia, change " i species" to " 3 species," 

 and after " Meigen " add, " the first species, by original designation." 



Page 611, under Syiphus, change '' Epistrophe Walker," to "Cheilosia 

 Panzer." 



Page 613, under Tetramerinx, after "preoccupied" add, ^' Parasteinia 

 Cockerell, 1905." 



Page 614, under Thereva, strike out "Syn., Dialineura Rondani, 

 1856." 



Page 6x6, before Trichoinyia insert the following : 



" Trichocladiiis Kieffer, Ann. Soc. Sci. Bruxelles, Vol. 30, p. 356, 

 1906, I species. Type, Orthocladius fissicornis Kieffer." 



Page 619, under Willa, after 1869 insert, '' Dipalta Osten Sacken, 

 1877." 



Page 620, Xanthograinma should be in italics; after 91 add, "Equals 

 Philhelius Stephens, 1841." 



