LETTEK OF OCTOBER 10TII, 1859. 29 



any other genera in this group besides those you have so well 

 described? Besides this I have made drawings and descrip- 

 tions of many other novelties, of which you will hear in due 

 time. Please do not forget to send me the diagnoses of the 

 new genera you may describe. 



VII. 



EASTON, February lGth, 18G0. 



As I am compelled to leave home on a visit to Virginia 

 to-morrow, to be absent perhaps for some time, I send in the 

 post which Avill bring to you this note, three papers on 



Tineina, and hope they will prove of some interest to you. 



You will find also enclosed herewith, some photographic 

 copies of some of my drawings referred to in the first paper,* 

 together with a sheet on which I have traced some heads of 

 other genera and copies of the wing structure of others. f 

 This will enable you to make more satisfactory comparisons, 

 particularly in those groups which I have designated as new 

 ones. By it you will perceive that the genus Aspidisca is 

 quite as nearly related to Cemiostoma as to Tinagma. The 

 genus I have described ought to carry with it in a systematic 

 arrangement that of Antispila, and thus you perceive how 

 much we are at variance respecting its position. I have no 

 hesitation in saying that I regard the position of the genera 

 Perittia, Tinagma and Douglasia in the family Glyphip- 

 terygidce as too anomalous to be correct, and think that 

 a revision of these genera and a comparison with those alluded 

 to previously would induce you to throw them together in a 

 new group, with some of the genera included under Lyonetidce. 

 I have recognized some of our Tineina as belonging to the 



* This will be found introduced at the end of the first published paper, re- 

 printed from the "Proceedings of the Academy of Natural Sciences," Sept., 

 1852. The figures, though referred to there at p. 262, were not published. 

 H. T. S. 



f These I have introduced under the notices of the respective genera, which 

 they illustrate. H. T. S. 



