C. L. Walton 9 



examination in March and September, 1916, showed that these pastures 

 had largely recovered by the latter date. I have heard the term 

 Chwilen y rhedyn or fern beetle applied to this insect in the Llyfnant 

 Valley, where also I was informed that it had damaged garden apples. 



Aphides. 



I am indebted to Prof. F. V. Theobald, M.A., of the South Eastern 

 Agricultural College, Wye, for the identification of all the species here 

 recorded with the exception of S. Innigera, R. ribis and M. cefasi. Apart 

 from these and A. rutnicis, none are of economic significance agricul- 

 turally. 



With regard to the above species Rhopalosiphum ribis is seldom 

 common and little fruit is grown in the Area apart from private gardens. 



Aphis rumicis sometimes occurs in numbers upon mangolds, and in 

 1915 I noted it abundantly upon Atriplex patula growing among man- 

 golds on July 1st. A watch was kept, but none were observed upon 

 the mangolds until July 7th when migration commenced. In 1916 

 this pest was scarce, and I only obtained a few from Docks in July and 

 August, and a very few on Broad Beans in early September. This 

 species was so abundant upon Broad Beans in 1915 that a large pro- 

 portion of the crop failed completely, the plants presenting a stunted 

 and scorched appearance. Beans are not grown as a field crop within 

 the Area, only a few rows being seen, here and there. Even in gardens 

 the practice of "topping" is practically unknown, and hence no check 

 is given to the pest. During 1916 this insect was also as infrequent 

 on beans as on mangolds. 



Macrosiphum granarium was found upon black oats near Crosswood 

 during July, 1915, but not in sufficient abundance to make any differ- 

 ence to the health of the crop. 



Schizoneura lanigera. This species is to be found practically wherever 

 apples are grown but generally in small amount. With certain ex- 

 ceptions, the farmers of the Area give but little attention to gardening, 

 especially those living at high elevations. Market gardening could, in 

 certain parts, be practised to a much greater degree. 



The following is a list of recorded species, together with their host 

 plants : 



Pkglloxera quercus, Fons. Oaks in hedge, abundant at Crosswood, 

 Aug. 1916. 



Schizoneura lanigera, Hausmann. Apple. 



