J. R. MALLOCH 233 



It should be noted that several groups in Phaonia have been 

 separated from that genus by European authors, and that a few 

 of these are included in the above key. Those so listed are not 

 in all cases so well distinguished as to deserve generic rank, but 

 there is no doubt in my mind that with the growth of our 

 knowledge of the genus and its allies some further division is 

 inevitable. 



I have endeavored to obtain the genotypes of the segregates 

 above referred to, and the characters for Euphemia and Rohrella, 

 as well as the segregates accepted as of generic value, have been 

 attributed to them from an examination of the genotypes and 

 allied species. 



In the key to Phaonia, presented herewith, I have included all 

 segregates of Phaonia which are not in my opinion sufficiently 

 well differentiated from the true species of that genus to warrant 

 their being placed in different genera. 



STEINELLA Malloch 



This genus is known to me only from South America and is 

 represented solely by the genotype, yrima Malloch. 



SMITHOMYIA Malloch 



Generic characters. — Differs from Poecilophaonia Malloch, 

 which it most closely resemljlcs, in having the fourth wing-vein 

 bent forward at apex. 



The first wing-vein is setulose above only, the third is setuloso 

 from base to near apex above and from base to near inner cross- 

 vein below. The frons in female has the lower sui)ra-orbital 

 bristle strong and directed forward as in Dcndrophaonia, and the 

 interfrontalia with a pair of cruciate bristles. The prosternum 

 and center of pteropleura are hairy, and there are some black 

 hairs along the i)osterior margin of the metathoracic spii'acle and 

 some weaker hairs on lower posterior angle of hypopleura. 



The only species of the genus, concinna Van der Wulp, occurs 

 in Mexico and may yet bc^ found in the southwestern United 

 States. 



POECILOPHAONIA Malloch 



In my description of this genus I erroneously stated that the 

 third vein is bent forward. It is the fourth vein that is thus 

 bent. 



TRANS. AM. ENT. SOC,. XI.VUI. 



