416 Description of a Canadian Butterfly, 



black, whilst that of the latter is yellow. The larva of glaucus 

 feeds on Styrax Americana (Storax, a Southern plant), whilst that 

 of turnus lives on a great variety of shrubs and trees, such as Ash, 

 Elm, Plum, Tulip-tree, Basswood, <fcc. ; while young it is bluish- 

 grey at each extremity and white in the middle (Gosse), and just 

 before changing to the pupa it becomes purplish-brown. 



P. Philenor is the only N". American species with a spiny 

 Larva. It feeds exclusively on plants of the genus Aristolochia 

 (Virginian Snakeroot, Pipe- Vine, (tc.,). 



LIST OF WORKS TO BE CONSULTED BY STUDEXTS OF CANADIAN 

 DIURXAL LEPIDOPTERA. 



Abbott & Smith. Natural History of the rarer Lepidopterous insects of 

 Georgia, including their systematic character, metamorphoses, 

 and the plants on which they feed. 2 vols, folio. Colored plates. 

 London. IT 79. Text in French and English. Very scarce ; ad- 

 vertised price in New York, S55.00. 



This work contains figures and descriptions of many Canadian 

 Butterflies and Moths. There is a copy in the Library of the 

 Provincial Parliament, Toronto. 



Agassiz, Louis. Lake Superior, its Physical Character, Vegetation and 

 Animals, &c. 1 vol., 8 to. Boston, 1850. Libraries of P. Par- 

 liament and Geological Survey. 



There is a figure and description of Pontia oleracea, and of 

 several other Canadian Lepidoptera, by Dr. Harris, in this work. 



Boisduval & Leconte. Histoire generale et Iconographie des Lepidopte're3 

 et des chenilles de l'Amerique Septentrionale. 2 vols. Text and 

 plates (colored). Paris, 1833. French. 



. This work is very scarce, but, through the kindness of E. Bil- 

 lings Esq., I have had access to a copy in his possession. It con- 

 tains beautifully colored figures of nearly all the known Canadian 

 species of Butterflies, besides many not included in our fauna ; 

 the letter-press is unfortunately incomplete. A newer edition in 

 1 vol. (1843), also very scarce, is advertised in Xew York at 

 825.00. 



Cramer, Pierre, de nitlandsche Kapellen, ou Papillon3 Exotiques dee 

 trois parties du monde, L'Aise, L' Afrique, et L'Amerique. 5 vols., 

 4 to. Colored plates. Amsterdam, IT 75 — 1 791. Textin Dutch 

 and French. 



There is an incomplete copy of this fine and rare work in the 

 Library of the Montreal Natural History Society. It has figures 



