1918.1 ■ 135 



not actually feed upon them. Tilia and Erodmm are, in fact, practi- 

 cally the only Ihalamiflorae that are generally attractive. 



The CaJyciflorae are much more popular, especially the orders 

 Leguminosae, Rosaceae, and JJmhelliferae. In the first mentioned 

 order, JJJpx, Sarothamnus, and Ononis are the special favourites. 

 Piezoclorus lituratus. Dictyonota sfrichnocera, Asciodema ohsoleluw, 

 and various species of Ortliotylus on VJex, Dictyonota fuliginosa, 

 Anthocoris sarotliamni, various ^ Orthotyli, and HeterocordyJus on 

 SarotJiamnifS, and the genus Berytus, Metacantlrus eJeyans, Ccdocoris 

 lineolatus, and Macrotylus paykulli on or under Ononis^ are the most 

 noteworthy examples of a very intimate association. In the Bosaccae, 

 Crataegus is the chief favourite, 29 species having been recorded as 

 occurring on it. Brumes, Sjiiraea, Bubtis, Byrus, and Sorhus are also 

 attractive, chiefly to various species of Capsidae. The broad umbels of 

 the Unihelliferae are enticing chiefly to Capsidae, but also to several 

 species of Bentatomidac, x\oi2i\AY Eurydema domimilus, hwi here it is 

 not easy to single out any definite association, as Hemipterists usually 

 do not specify the particular species of JJmhelliferae^ but mention the 

 order as a whole. In the majority of cases, probably the plants referred 

 to are Angelica sylvestris, Heracleum spliondylium. and Bastinaca 

 sativa. Of definite food-plants, the Onagraceae furnish two well-known 

 examples, Epilohium liirsutum for Dicyplms eipilohii and Circaea hite- 

 tiana for Metatropis rufescens. 



Amongst Gamopetalons plants, the most frequented • orders are the 

 Gompositae and the Bricaceae. In the former, Achillea, Tanacetiim, 

 Ai'temisia, Henecio, the thistles, and Centaurea are the most popular, 

 while in the latter both Calhtna and Erica cinerea have man}^ votaries. 

 The Bubiaceae are particularly associated with certain Capsidae, espe- 

 cially the genus Boeciloscytus. The ash-tree is fairly popular, with a 

 record of 15 species. The Scrophulariaceae and Lahiatne are hardly so 

 attmctive as might have been expected. Vcrhascuin is by far the most 

 , popular in the former order, and in the latter Tf/ynius srrpylliDn and 

 Stachys sylvatica; next in popularit}^ to these, but a lon<j: \v;iv behind 

 them, are Mentha, Origanum, Lamium, and TeitcriiDn. 



Amongst the Apetalae, we find some extremely popular orders, and 

 the Anient aceae are the prime favourites. Forest trees, such as Birch, 

 Alder, Hazel, Oak, and Beech, are all very attractive, and oak easilv 

 heads the list with u])wards of 70 species. The Salicaceae, again, with 

 the various willows and poplars, harbour a great many species. Equallv 

 attractive are nettk's and the connnon elm, wliile the Chenopodiaceae 

 and Euphorbia ceae also have many associates. 



