212 PTILOTA. 



small it is true, but whose annual existence, at that inclement 

 season, in the winged state, is probably of more consequence 

 in the intricacy of its great Creator's plans than we are at 

 present aware of, although He constantly exposes it to the 

 dangerous vicissitudes of winter ; for 



Each shell, each crawUng- insect, holds a rank, 



Important in the plan of Him who framed 



This scale of beings, holds a rank, which, lost. 



Would break the chain, and leave behind a gap. 



Which Nature's self would rue.'"— Lepidoptera Britannica. 



A clear idea of the arrangement of the limbs in the three 

 principal divisions of incomplete, obtected, and coarctate 

 pupa, will be obtained from the following figures, in which 



^vw wp m 



Fig. 46. Pupa of the great water-beetle {Hydr 



■■ piceus] . 



the same letters refer to the same organs throughout : fig. A^ 

 A <? I T 



11V 1 I in, 



Fig. <17. Pupa of the tortoise-shell butterily [Funcssn mticie). 



representing a coleopterous; fig. 47 a lepido})terous, and 



