452 Sir George F. Hauipson on the 



Pyrali(Lv. which has become differentiated from the 

 primitive stock, represented by the more generaHsed 

 Pi/raustina?, by vein 7 of the forewing having become 

 stalked with 8, 9. Of the three the most generaHsed is 

 the Pijralina^, giving rise on the one hand to the Endo- 

 trichiiia3 from which arose the Chri/saugin^e, and on the 

 other hand the Ejiipascldinx from which have sprung 

 the Pliycitinm and Aneradiinx. 



An excellent revision of the Pyralhife of the Palaearctic 

 fatina, including the other two subfamilies here dealt 

 with, was published by Mr. E. Meyrick in our Transac- 

 tions for 1890, they are, however, few in number compared 

 with the tropical forms; the ^^enns, Acropentia!^, Meyr., 

 which he includes amonffst them I reffard as belonsring: 

 to the Schcenohllna'. A very valuable essay on the 

 classification of the Pyralinx, Endotrlcliiuce, and Ghry- 

 sauginai was published in the Annales de la Societc 

 Entotnologique de France* by the late M. E, M. Ragonot, 

 with most accurate and minute diagnoses of most of the 

 genera, but such a large number of species were either 

 unknown or very imperfectly known to him that it cannot 

 be regarded as more than the preliminary essay which he 

 himself considered it. Jn it he defined the PudotrichincV 

 as differing from the Chrysauginfe in being slenderly 

 built insects, and includes in them some American genera 

 which on the definition by the maxillary palpi which I 

 have adopted I consider as belonging to the CJivysaugina'. 



In the phylogeny of the subfamilies, as given in the 

 family trees, the genei'a should rarely be considei'ed to be 

 directly derived from those placed as their ancestors as at 

 present constituted, and much less so from any existing 

 species of those genera, for in the large majority of cases 

 they are derived from more generalised ancestral forms 

 which would come within or almost within the definitions 

 of those genera. 



Species which I have examined, but which are not in the 

 British Museum collection, ate marked with an (*), species 

 of which the types are in the Museum with a (f), whilst 

 described species of which the classification is uncertain 

 are placed at the end of each genus. 



* Ann. Eiit. Soc. Fr., 1890, pp. 435-546 ; and 1891, pp. 15-114 & 

 -559-662, plates 5. 7, 8, & 16. 



