30 DR. BRACKENRIDGE CLEMENS' LETTERS. 



former family, but have not yet fully satisfied my mind, that 

 they do not belong to Glyphipteryx, and hence have not yet 

 described them, but certainly they are too markedly different 

 from Antispila to admit of inclusion in the same family group, 

 even under my own views. 



In the photographic copies of my sketches you will find 

 the details of structure of a new genus, Anorthosia, which 

 I have not yet published.* I send it because I regard it as 

 very curious in the structure of its labial palpi, and as it was 

 upon the same sheet containing the others. I intended to 

 give illustrations of all the new genera I might describe in 

 the papers I send, but I found that the expense was altogether 

 too great, for our American engravers are exorbitant in their 



charges Hence I do not send you the artist's 



plate, but my own drawings. As I am my own delineator, 

 the work of course consumes much of my time, and recently 

 I have ceased to delineate the heads. I am now sorry that 

 I have made no representation of B. ? Staintoniella, Buccu- 

 latrix? coronatclla ; Eudarcia,Diachorisia,ov Cosmiotcs or 

 Aspidisca, because they are all small and difficult to de- 

 lineate. 



I send you two copies of each of my papers, and beg you 

 will have the kindness to present one of each, with my compli- 

 ments, to Professor Zeller. You are doubtless in frequent 

 communication with him, and as he has described quite a 

 number of American Tineina (however, I have never seen the 

 descriptions), he may recognize in my descriptions some 

 previously published by himself. Please say to him, that if 

 he can send me, without inconvenience to himself, his de- 

 scriptions of our Tineina, I shall look upon his kindness 

 as a great favour. And must beg both you and himself 

 not to forget, that in the recognition of genera in such an 

 immense field as our country presents, with no guide but 

 books treating of foreign fauna, I labour under many diffi- 

 culties. 



Professor Agassiz, however, has interested himself in my 



* Described in the Tree. Acad. Nat. Sci. Phil. May, 18G0. H. T. S. 



