INTRODUCTION. XXV 



1. BoMBYCES. Afite?inis Pectifiatis (continued). 



— Alis patulis. 



Alis reversis. 



— — — — Alis deflcxis. 

 cristatas dorso fasciculis exaspci-ato, 



— — Spirilingues Lingua involuto-spirali. 



— lasves Alis patulis. 



— Alis deflexis. 



cristatie dorso. 



2. NocTU^. Anfennis selaceis, ?iec pecfinafis. 



Elingues. 



— — Spirilingues : hm^es do?'so. 

 cristatcB dorso. 



3. GEOMETRiE. Alis patentibus horizontalibus quiescentes. 



Pectini cornes : alis posticis angulalis s. deiitatis. 



alis poslicis rotundatis integris. 

 Seti cornes : alis angulatis. 

 alis rotundatis. 



4. ToRTRicES. Alis obliisissi/nis ut fere niusis, planiusculis. 



5. Pyralides. Alis coiuiiveniibus in figuram ddtoideian 



fortification. 



6. TiNE^. Alis convohitis fere in cylindrum^ fronte pro- 



minulo. 



7. Alucit^. Alis digitalis fissis ad basin. 



No alteration was made in the 12th edition of the *'Systema 

 Naturse," except by the sub-division of the Bombyces, through 

 the addition of the Attaci. The groups now run from i to 8 

 instead of from i to 7 ; groups i and 2 being as follows : — 



I. Attaci. Alis patulis inclinatis. 



— Pectifiicornes elingues. 



— — — spirilingues. 



— Seticornes spirilingues. 



