18G1] 23 



Zicrona exapta, Sn//, is a beautiful species inhabiting; Arctic Ame- 

 rica, New England and Missouri ; it is subject to much variation, and 

 one variety has been described by Kirby, N. Zool. p. 270, No. 384, as 

 Feiitatoma variegata : another variety is Zicrona marc/met/a, Dalhfi, 

 Brit. Mus. Cat. Hemiptera, pt. 1, p. 109. 5. 



Edessa cruciata, Sai/, belongs to Acnnthoaoma. and has since 

 been redescribed by Hope. Cat. Hemipt. p. 30, (1837) as Acanthoaoma 

 boreal is. 



Pentatoma tristigma , Sa//, belongs to Euschisfux^ and is E. luri'hix. 

 Dalhis, Brit. Mus. Cat. Hemipt. pt. 1, p. 207 j pi. 7. fig. 6. 



GONOCERUS, Lat. 



Gr. obliquus. — Blackish-fuscous, robust; head, antennfe and ros- 

 trum black, the latter with a broad yellow stripe each side beneath ; 

 thorax densely covered with black granules, each anterior angle with a 

 small, cylindrical, orange, projecting point, directed forwards, lateral 

 margins orange; scutellum granulated, the extreme tip orange; heraely- 

 tra rather less densely granulated than the thorax, embolium lurid, 

 corium bounded posteriorly by a semidiaphanous, narrow whitish band; 

 membrane uniform, deep fuliginous ; tergura red, excepting the lateral 

 submargins, posterior margin of the sixth segment and surface of the 

 remaining posterior segments, which are black, lateral margins obscurely 

 and irregularly orange; beneath finely punctured with black, which is 

 bare in places, disclosing the fulvous ground-color; wings dusky hya- 

 line, nervures black; legs black, punctured. 



Length 11 lines. Humeral breadth 2^ lines. 



Hah. — California. Cabinet of the Society. 



This species somewhat resembles G. tristis, Fabr., but maybe 

 known at once from that species, by the band upon the hemelytra, and 

 the rather more robust form. 



Lygaeus 5-spinosus, Say, belongs to the genus Ali/Jui^, and has 

 since been described by Herrich-Schaefter, Wanzenartigen Insektea, 8, 

 100; pi. 282, fig. 868, as Al>/dm crumtus. 



Lygaeus eurinus, Sai/, belongs to Alydus., and seems to be the 

 common Alydus calcaratus, Liun., found so abundantly in some parts 

 of Europe. 



Lygaeus geminatus, Say, is the common European Cymm resedx, 

 Panz. Fauna Germanica, 40, 20. 



