8 FAUNA OF NEW ENGLAND. 



to present knowledge, than in any other area of similar extent in 

 this country, 36 or 60% of the 61 recorded by Horvath ^ finding 

 place in the subjoined list, besides ten detected since. Horvath 

 gives evidence tending to show that a great majority of these species 

 are of Palaearctic origin, and supposes further that their migra- 

 tion was largeh- eastward, by way of Alaska. The latter opinion 

 seems hardly in accord with the apparent massing of the species on 

 the eastern side of the continent, referred to above, but at least 

 one of the species listed below, Callicorixa praeusta, occurs in both 

 IMaine and Alaska, and possibly the range of others may be found 

 likewise to extend westward when oiu- knowledge of the fauna 

 of British America is more nearly complete. The following New 

 England species occur also in the Palaearctic region: 



Sciocoris microphthalmus Cimex lectularius ^ 



Zicrona caerulea f Xylocoris cursitans 



Corizus hyalinus Miris dolahratus 



C. crassicornis Sienodema trispinosum 



Aradus luguhris Trigonoiylus ruficornis 



Nysius thy mi T. brevipes 



N. ericae f Pithanus maerkeli 



t Trapezonoius arenarius - Sienoius hinotatus 



Sphragisticus nehulosus Calocoris norvegicus 



J Dictyonota tricor?iis Poeciloscytus unifasciatus 



t Galeatus peckhami Capsus ater 



t Leptobyrsa rhododendri ^ Lygus pabulinus 



Reduvius personatus * L. apicalis 



Nobis limbatus L. praiensis 



X. flavomarginatus L. campestris 



y. ferus L. ruhicundus 



1 Horvath, G. Les relations entre les faunes hemiptfirologiques de I'Europe 

 et de rAmfirique du Xord. Ann. Hist.-Xat. Mus. Xat. Hting. Budapest, 1908, 

 vol. 6, pp. 1-14. 



2 The dagger indicates additions to Horrath's list. 

 » Introduced from the United States into Europe. 



« Probably imported, but thoroughly acclimated and hence to be considered 

 as members of otir fauna. Xabis hretis has not established itself and is therefore 

 omitted from this list. 



