lOR THE CANADIAN ENTOMOLOGIST. 



TINEINA. 



BY V. T. CHAMBERS, COVINGTON, KY. 



HELIOZELLA. 



H. ? cesella. N. sp. ? 



I am but imperfectly acquainted with this gemis, knowing it only 

 through the Nat. Hist. Tin., vol. xi. ; and the plan of that work does not 

 seem to admit of details of structure. If it is equivalent to Aechmio, 

 Periftia, Tinagma and Douglassia combined, as those genera are limited 

 in Ins. Brit., v. 3, then the proper place for this species is in it. But 

 if, as I conclude from the account in Nat. Hist. Tin., it is the equivalent 

 of Tinagma alone, and the other groups above mentioned are good, dis- 

 tinct genera, then this species, while possessing affinities with all, would 

 be out of place in either. In Ins. Brit. Mr. Stainton places in Tinagma 

 three species, sericiellutn, stannedluni and resplendellum. In Nat. Hist. 

 Tin. these three species, with the comparatively new species litJiargyrella 

 Zell. and grisescens Staint., compose the genus Heliozella, none of the 

 species placed in Aechmia, PeritUa or Douglassia in Ins. Brit, being placed 

 in it. Prof Zeller has since (Beit, z Kent, May, 1873) described from 

 Texas a new species, H. gracilis — the only species heretofore met with in 

 this country. Possibly cpsella may prove to be identical with gracilis, but 

 I think not, and the particulars in which they differ will be indicated 

 below. Some of these points of difference are structural, based upon the 

 supposition that Heliozella is identical with Tinagma, as characterized in 

 Ins. Brit., v. 3. For instance, in Tinagma, as there characterized, there is 

 no tongue, the cilice are long, the antennae short, stout and very much com- 

 pressed. In the species before me the tongue is as long as the thorax and 

 naked (as in Douglassia) ; the antennae as stout and thick, not half as 

 long as the fore wings, 7tot compressed (unless by " closely compressed " is 

 meant that the joints are closely set), they are microscopically pubescent, and 

 with a minute basal Joint as in Aechmia; and the ciliae have no unusual 

 length, but are rather coarse. I do not detect the marked demarcation 

 between the wings and the ciliae which Prof Zeller describes in If. 

 gracilis, nor are the wings posteriorly so much narrowed and pointed as 

 from his description I infer them to be in that species. Certainly the 

 hind wings are not so much so as in either D. ocnerostomella or T. serici- 



