110 THE BUTTERFLY VIVARIUM. 



Butterfly division, on the other hand, offer much 

 greater variety of form, nearly all having curious 

 little points at intervals along their ridges, and 

 being in general of an angular rather than a conical 

 form, as shown in the suspended chrysalis, Plate II. 

 No. 3. Of these angularities, the chrysalis en- 

 graved in the work of Madame Merian, of the magni- 

 ficent Butterfly Morpho Idomeneus, may he cited as 

 an extreme example; as is also that of Ornithoptera 

 Beliacon, figured by Horsefield in his fine work 

 on the insects of Java, still incomplete. For the 

 extreme angularity of the entire form, that of Calli- 

 drias Eubalus, figured by Stoll, may be cited, the 

 part containing the head dipping downwards in a 

 nearly vertical direction, while the tail portion 

 shoots off from the root of the wing-case in a nearly 

 horizontal line. The chrysalis of our pretty native 

 Butterfly the Orange Tip, Euchloe Cardammes, is 

 of somewhat similar formation, and therefore 

 assigned to a class popularly called " boat-shaped" 

 chrysalides. 



The small and perfectly oval chrysalides so often 

 found are those of the Syrphus tribe, and of com- 

 mon House-flies, etc., of which there are many 

 modifications of form. That of Syrphus Pmastri 

 is shaped like a small flask, or, as Reaumur poetically 



