6 



species,. are reprinted, so as to give completeness to the work. I am also 

 indebted to Messrs. A. R. Grote, II. K Morrison, ('. S. Minot, and Dr. L. 

 Harvey for the examination of their types. 



The plates illustrating the venation and external anatomy have been 

 drawn by Mr. S E. Cassino, under my superintendence. The figures in 

 plate I were drawn by myself with the camera lucida; those of the other 

 plates were drawn in the same manner by Mr. Cassino. Most of the figures 

 are exact copies of the camera-drawings; a tew have been reduced by pho- 

 tography. By this method it is believed that the drawings are at least 

 approximately correct. In every case I have carefully revised the drawing of 

 the artist. The drawings of the parts of the thorax on plate 7 were drawn by 

 Mr. Cassino with the camera, and then carefully corrected from the speci- 

 mens; Ind. after all, these drawings of the thorax must he regarded as partly 

 diagrammatic, as they are quite difficult to represent in outline. The work 

 of Mr. L. Trouvelot, of Cambridge, Mass., who drew the moths, speaks for 

 itself. 



While this work is based largely on material contained in the museum 

 of the Peabody Academy of Science, wherein are contained the types of 

 nearly all the new species described by me, I should state that this work has 

 been done as an officer of the Academy; and to the enlightened views of the 

 trustees, who believe that one of the primary objects of the institution is 

 the advancement of science by the publication of original memoirs, I am 

 indebted for the time placed at my disposal in the preparation of this 

 monograph ; the funds of the Academy being too limited to warrant the 

 publication of so extended a paper in its memoirs. I also owe much to the 

 kind suggestions and encouragement of Prof. F. V. Hayden, during the 

 preparation and publication of the work. 



An essay on the geographical distribution of the PhaUnthLc of this 

 country, and a list of works referring to the family, will follow the descrip- 

 tion of the species. 



Peauody Academy of Science, 







Salem, Mass., Aug. 10. IS 75. 



