22 LEPIDOPTERA 



10. Hindwings with 8 approximated to cell and an- 



terior half of 7, often anastomosing with 7, 

 never connected with cell . 5. Pi^ralidina (part). 

 Hindwings with 8 remote from 7, sometimes con- 

 nected with cell . . .11. 



11. Hindwings with 8 anastomosing with cell 



6. Psycldna (part). 

 ,, ,, 8 not anastomosing with cell . 12. 



12. Labial palpi obtnse . . 7. Tortricina{\)Avt). 



,, more or less pointed . 8. Tineina (part). 



The phylogeny, or scheme of development of these groups, 

 is shown in the accompanying diagram : — 



Phylogeny of Lepidoptera. 



Notodontina Papilionina 



I I 



Caradrinina Lasiocampma Pyralidina 



Psy china Tortriciua 



Tineina 



I 

 Micropterygina 



1. CARADRININA. 



Maxillary palpi obsolete. Forewings : lb simple or hardly 

 furcate, Ic absent, 5 approximated to 4 towards base. Hind- 

 wings with frenulum,' Ic absent, 8 connected or anastomosing 

 with cell. 



The four families which constitute this group in Britain are 

 closely related together ; the first three represent three separate 

 lines of development, rising nearly simultaneously from a 

 common origin in the Ocneriadae, which family is clearly de- 

 rivable from an early form of the Pf^ychkJae. The Si/ntomi- 

 didae (probably not authentically fovuid in Britain) arc an 

 advanced development of the Arctiadae. 



Imago with forewings more or less elongate-triangular, tcrmen 

 not very oblique ; hindwings broad-ovate. 



Type of markings. — Forewings with five transverse lines, 

 viz. : subbasal (not reaching dorsum), first, median, second, 

 and subterminal, and three discal spots, viz. : a roundish 



