C. L. Walton 11 



chiefly about Abeiystwyth and the experimental green-house of the 

 Botany Department of the University : these nine were as follows : 



1. Asp idiot us hederae, Vallot. On a pot palm. 



2. A. cyunofhylli, Signoret. Leaves of Cycas revoluta. 



3. F'iorinia fiorimae, Targion.i-Tozzetti. Palm, with A. hederae. 



4. Dias'pis zamiae, Morgan. Upon ? sporocarp (megaspore) of 

 Dioon edule. 



5. Chionas'pis asfidistrae (Signoret). Ferns. 



6. Lecanium hesperidum (L.). Common upon pot ferns. 



7. L. perforation (Newstead). Palm. 



8. L. Jieitrispherictim (T. T.). On Macrozamia spiralis. 



9. Dactylopius longisplnus {T.T.). Vines; beneath scales of C^cas 

 revoluta ; and larvae beneath leaves of Dorsfenia sp. 



Cecidomyidae. 



Only two have been noted as harmful. 



Perrisia crataegi (Winn), which affects the tips of young Hawthorn 

 shoots causing them to assume the appearance of a rosette. This 

 insect is common, and affects a considerable proportion of the shoots 

 in the lowlands. 



The second species is Rhabdop/iaga salicis (Schrank) which I have 

 obtained galling species of Salix on the banks of the Ystwyth, near 

 Aberystwyth, and elsewhere ; it is not at all abundant. 



Crane Flies, Tipulidae. 



I have only recorded three species, although others undoubtedly 

 exist, one of which was very abundant on the Dyfi Flats in 1914; the 

 specimens then collected were, however, unfortunately lost. Tipula 

 oleracea, Lim., is at times very common, but only one complaint con- 

 cerning it reached me, specimens being sent in 1913 by Sir E. Pryse, 

 Bart. ; the larvae were exceedingly abundant in one of his fields at 

 Gogerddan. T. lateralis, Meig., was fairly common in 1916, and Pedicia 

 rivosa, L., was obtained on mountain pastures. 



Onion Fly, Phorbia cepetoruiv, Bouche. 



The Onion Fly was noted several times from leeks. In October, 

 1915, in a farm garden near Borth, a bed of leeks 40 x 15 feet in extent 

 was destroyed, only about a dozen plants remaining when I visited 

 the place on November 4th. From 3 to 7 larvae were obtained from 

 each of these leeks. 



