Slips for Librarians to paste on Catalogue 

 Cards. 



N.B. Take out carefully, leaving about quarter of an inch at 

 the back. To do otherwise would, in some cases, release other leaves. 



SCUDDER (SAMUEL H.). BUTTERFLIES: 

 Their Structure, Changes, and Life-Histories, with 

 Special Reference to American Forms. Being an 

 application of the "Doctrine of Descent" to the 

 study of Butterflies. With an Appendix of prac- 

 tical instructions. By Samuel H. Scudder. With 

 numerous illustrations. New York : Henry Holt 

 & Co., 1 88 1. Square 8vo, pp. ix, 322. 



BUTTERFLIES: Their Structure, Changes, and 

 Life-Histories, with Special Reference to American 

 Forms. Being an application of the " Doctrine of 

 Descent" to the study of Butterflies. With an 

 Appendix of practical instructions. By Samuel 

 H. Scudder. With numerous illustrations. New 

 York: Henry Holt & Co., 1881. Square 8vo, 

 pp. ix, 322. 



ENTOMOLOGY. BUTTERFLIES: Their Struc- 

 ture, Changes, and Life-Histories, with Special 

 Reference to American Forms. Being an appli- 

 cation of the "Doctrine of Descent" to the 

 study of Butterflies. With an Appendix of prac- 

 tical instructions. By Samuel H. Scudder. With 

 numerous illustrations. New York : Henry Holt 

 & Co., 1881. Square Svo, pp. ix, 322. 



