76 



THE CANADIAN ENTOMOLOGIST. 



especially in the pattern of ornamentation. Polenta Tepperi is a very 

 pretty, delicate, dusky greenish species from the South, and its sole gen- 

 eric distinction from PlagiotnimicKS, the " plain " fore tibiae, wanting the 

 claw, must be verified. The frontal excavation is slighter and its shape a 

 little modified as compared with Pityochroinus^ but in their peculiar 

 appearance the two insects are so similar that they would hardly be 

 referred to different genera. It must be remembered that Mr. Morrison 

 redescribes Pityochromus as Schinia media, and that it is with this species, 

 which has a claw on the fore tibiae, that Mr. Morrison compares Polenta. 

 The typical species of Schmia, trifascia and rectifascia, appear to me to 

 have the fore tibiae unarmed. 



Stiria Grote. 



Vestiture scaly. A moderate frontal excavation with a moderate 

 tubercle near its inferior edge. Eyes naked. Legs unarmed, the fore 

 tibiae with a stout blunt claw. The thorax is short with the extremity of 

 the patagiae spreading and fringed with uplifted scales like Plagiomimicns 

 and Polenta. Size large ; fore wings broad with a Plusia-like tooth at 

 internal angle. The species is rather light bright yellow, with frosted 

 purple patches at base on internal margin and at the centre of the wing, 

 while the terminal space and thorax are also of this darker shade. A 

 showy species, Rugifrons, Grote, Bull. B. S. N. S., II., 73, from Illinois, 

 Kansas and Colorado. 



Stibadium Grote. 



A curious moth, resembling the fuscous species of Goriytia in color 

 (necopina, nitela), but slighter. The wings have not the fringed tooth at 

 internal angle of primaries as in Stiria., but belonging here from the 

 shallow excavation of the front, wanting, however, the tubercle, and the 

 unarmed tibiae, the fore tibiae with a claw. The peculiar frosted coloring 

 also allies the moth to Stiria. Spiwiosum Grote, Bull. B. S. N. S., II., 

 74, occurs in the same localities with Rtigifrons and in two varieties, one 

 paler, more ochrey than the typical form. 



