PRACTICAL HINTS. 217 



15. — In the Shetland Islands (Unst) the larva^ of rh'coit/ujrria 

 I'liiisprrsd feed on Silriir )iiaritini(i, in July and Au,L,mst ; in the south of 

 En.iifland the larv* feed on SUcni' i)iriata (McArthur). 



16. — The larva' of hianthtn'cia irnyitlan's are to he swept in middle 

 and late July from si/<>)i,' otites, or, when iiearly full-grown, they may 

 he found just helow the surface of the ground at the roots of their 

 food-plant by day, or obtained by searching with a lantern at night 

 whilst feeding at Tuddenham, A-c. They will feed freely on 1 jjchnis 

 lldscncKli in confinement, and also on garden varieties of Lifchiii^. 



17. — I>y the first week in July the larva' of (JnculUa rerbasci are 

 often quite large enough to show very marked traces of their feeding 

 on the mulleins. 



18. — The last fortnight in July is the time to sugar for Cahjinnia 

 l>yralma, Swansea appears to be a better locality for it than Reading, 

 fifteen specimens having been taken on one evening at sugar among 

 elms. 



19. — During July, beds of Aconituin and larkspur should be well 

 watched for Plnsia iiinncUi hovering over the flowers at dusk ; light 

 near such beds is also attractive to the species. They are also attracted 

 by flowers of Xicoticoia ajiinis. 



20. — Eggs of I'liisia bractca laid in July will hatch in a week ; the 

 larvie can be kept in a cold frame, and fed on lettuce and groundsel 

 till end of August; then, if one wishes to force them, they must be put 

 into a cucumber-house with temperature from 68°F.-80°F. and fed on 

 dandelion ; some thus treated were full-fed from September 13th till 

 end of month, imagines emerged September 24th-October 15th. 



21. — The larv;e of Hccatera screna are to be swept during the 

 afternoon at dusk in late July or August from various species of 

 I'icHs ; they are common on railway banks in Kent, on the IHantlutcciu 

 irm/iilaris ground at Tuddenham, &(i. The larvte are also some- 

 times abundant on the blossoms of Crcjiix circus (Norgate). 



22. — ('alliiicnia iniitiitta Hies at dusk in early July, and sometimes 

 occurs in considerable numbers in a limited space, possibly males 

 assembling. May also be beaten by day. 



23. — During the first week of July the imagines of Lcioftiliix 

 licnitiiamtx may be disturbed from the mugwort by day, or found on the 

 mugwort plants with a lantern by night. 



24. — In the last week of July, larva?, pupa? and imagines (chiefly 

 the last-named) of Ariptilia spiludacti/la are to be found on or among 

 Marnihixiii ntliiarc ; the pupte always on the upper surface of a leaf 

 near the midrib. 



25. — I ><jiri'ssaria liitiilmiiila is to be taken on old stone walls at 

 Kannoch, in July and August. 



2().— -V/vV'f/v'.s irri(ji(((m( is connnon on all tlu- niountriins between 

 i^raemar and (Uen Shee at a high elevation, frequenting slopes covered 

 with Vaniiiiiiiii and Alv/icmllla, and flying in the sunshine, the $ s 

 very rarely seen on the wing. A splendid locality for .S. irriijuana is 

 the western slope of the hill at the back of the hotel at Glen Shee, 

 also connnon on the mountains near Loch Laggan. 



27. — The foxglove flowers, collected on the smaller islands of the 

 Innei" Hebrides in July, pioduce larva* of the fine form of l\iii>itli,ria 

 fitihluilata, known as var. lirbmUtiin. 



28. — Capsules of Silenc inaritivia, collected in -lul) on the western 



