INTRODUCTION. 



I shall now introduce a table of the distribution of the Lepi- 

 doptera. 



iEgeriidae : Sesiida. Papilionida : Nymphalidas. 



II. Sphingida' : Hesperiida\ I. 

 Zyga?nida;. LyctenidtE. 



Notodontidae : Hepialida?. 

 III. . 

 Bombycidae : ArctiidcE. 



Geoinetrida? : Platyptericidse. 



v.* 



. PyralidjB. 



Noctuidee. 



Lithosiida; 

 IV. 



Tineida;. Tortricida;. 



VI.* Yponomeutidje. 

 Pterophorida. 



My limits will not, however, permit me to dilate upon the 

 above; I shall therefore merely remark, that it appears to me the 

 Platyptericidffi are far more intimately allied to the Lep.-semidiurna 

 than to the Lep.-pomeridiana; their afiinity to the former in their 

 perfect state being evident from some peculiar characters they pos- 

 sess in common with the conterminous genera of the GeometridEe 

 and Pyralidge, as I shall elsewhere have occasion to notice ; while 

 their resemblance in their larva state to the Lep.-pomeridiana I 

 conceive to be analogical, and to result from their relative positions 

 in the circle. 



I have now to refer to the two remaining tables, in order to show 

 how nearly the arrangement of the Lep.-pomeridiana which I have 

 adopted, from a consideration of the perfect insect, accords with 

 Dr. Horsfield's sketch deduced from the lar\'a. 



Pygaera. 

 Notodonta. II. 



Endromis. 



Aglia. 



Cossus. 



Hepialus. 

 I. 

 Zeuzera : OUcetkos. 

 Psyche. 



Saturnia. 



III. 



Limacodes. 



Nudaria. 



Lasiocampa. 

 IV. 

 Eriogaster. 



Eutricha. 

 Cnethocampa 



Penthophera. 

 Dasychira. V. Arctia. 

 Hypercampa. 



The above represents tlie five groups which Dr. Horsfield appears 

 to recognise in his "Descriptive Catalogue;" and the subjoined, 

 the four into which I have divided the same subjects in the follow- 

 ing pages. 



* Strictly, tliese two sections ought to have been reversed in the follow- 

 ing arrangement as here given ; but not being prepared to enter into de- 

 tails, I preferred a slight modification of tlie usual beaten track, rather 

 than its total subversion. 



