A. lunatus. 



315 

 Subfamily LAEGINA. 

 AciNOCOEis, Hahn. 



Cirnex lunatus, Fab., Mantissa lus. ii, 302, No. 237. 



Lygcms calidus, Fab., Syst. Ehyug. 230. 



Acinocoris calidus, Hahu,«Wauz. Ins. ii, 114, fig. 194. 



Largus intermptus, H.-Schf., Wanz. Ins. ix, 181, fig. 978. 



Largus hninlafus, Burm., Hanclb. ii, 282, No. 1. 



Largus {Acinocoris) lunatus, Stal, Euumtjratio Heuiipt. 1, 92, No. 1. 



Inhabits Brazil, Surinam, Mexico, and lias been once found in Cali- 

 fornia. It seems to be common in the valley of the Amazonas. 



Largus, Hahn. 



1. L. cmctus. 



Largus ductus, H.-Schf., Wanz. Ins, vii, 6, fig. 683; Stal, Enumeratio Hemipt 1 94, 



No. 11. 

 Capsus succinctus, var. a, Saj', Heteropt. 20. 



Inhabits Mexico, California, Oregon, Nevada, and Arizona. 

 This differs only in a slight degree from the following species, and 

 will no doubt hereafter prove to be only the extreme western form of it. 



2. L. succinctus. 



Cimex succinctus, Linn., Cent. Ins. Earior. 17, No. 44. 

 Cimex ruhrocinctus, De Geer, M6m. iii, 339, pi. 34, fig. 19. 

 Lygaus snccinclus, Fab., Ent. Syst. iv, 170. 

 Largus succinctus, H.-Scbf., AVanz. Ins. vi, 78, fig. 648. 



Inhabits Pennsylvania to Florida, and westward to Texas, Arizona 

 apd Southern Colorado. 



The western specimens are blacker and not so brightly red-margined 

 as those from the coasts of Georgia and Florida. In the sea islands of 

 the latter State, a variety occurs which is of a dirty sand-red. This 

 conforms with our experiences respecting other insects which belong 

 to sandy regions adjacent to the sea; for example, CEdipoda eucerata, 

 Harris, Qryllus abbreviatus, Salda iSignorete, and many others, which 

 are all paler and more nearly of the color of sand than their brethren 

 who live farther inland upon the dark soils. 



This genus is essentially American, and ranges between the northern 

 warm-temperate zone and the southern warm-temperate zone. Bach 

 geographical province has one or more species. The insular and equa- 

 torial ones of the lowlands are marked with yellow spots, while the 

 others are more uuiform aud plain r in their pattern. 



M.filicis. 



Family PHYTOCOEIDJB. 

 MoNALOCORis, Dahlb. 



Cimex filicis, Linn., Syst. Nat. 718, No. 20. 

 Acanthiafilicis, Wolff, Icon., Cim. 46, tab. 5, fig. 43. 

 Bryocoris filicis, Kolenati, Melet. Entom. ii, 129. 



Monalocoris filicis, Fieb., Europ. Hemipt. 237 ; Douglas & Scott, British Hemipt. 

 279, pi. 10, fig. 2. 



Inhabits Nebraska, Texas, Illinois, Maine, and Maryland; and Eu- 

 rope. 



It is sometimes quite common in late summer and early autumn on 

 several kinds of ferns. 



