110 Journal New York Entomological Society. C^'o'- >^xix. 



wardly the surface suffused and punctate with fuscous rather than 

 ferrugineous, generally with slight trace if any, of the postmedian 

 transverse fascia; the apex frequently slightly infuscated. The mem- 

 brane is pale brown much variegated with pale. The femora are 

 either entirely stramineous or at least towards apex spotted with 

 fuscous. The dorsal anterior parts not as setose as in diffitsus. 

 Number and arrangement of spines and teeth of anterior femora 

 much as in that species. 



Described by Stal from Mexico, since recorded by Van Duzee 

 from Florida and in my collection are four specimens from the 

 Huachuca Mts., Ariz., collected by me in 1905. In the U. S. N. M. 

 are several specimens from Mexico and one from Lower California. 

 Dis:tant records it from Guatemala and Colombia, S. A. 



Ligyrocoris abdominalis Guerin. 



GuERiN. La Sagra's Hist, de Cuba, VII, Ins., 165, 1857 (Beosus). 



Stal. Enum. Hem., IV, 146, 1874 (Ligyrocoris). 



Distant. Biol. Cent.-Amer. Rhynch. Het., I, 202, Pit XVII, fig. 21, 1882. 



piligera Stal — Stett., Ent. Zeit., XXIII, 312, 1862 (Plocioiiiera) . 



coustrictus Say — Uhler, Bull. U. S. G. and G. Survey, II, 309, 1876; 

 Proc. Boston Soc. N. H., 388, 1878; Check List. Hem., 14, 1886. 



This species has frequently been confused with what has been for 

 so many years catalogued as Ligyrocoris constrictus Say but that 

 species is now placed in the genus Pcrigcncs Distant as it lacks the 

 lunate vittse on the anterior ventral segments of the abdomen. 



Originally described from Cuba, it is the largest and one of the 

 most widely spread members of the genus. The head, anterior lobe 

 of pronotum, scutellum and beneath dull piceous black, the posterior 

 lobe of the pronotum usually has three pale fascia in the middle and 

 the humeral angles pale. The hemielytra are pale stramineous yellow, 

 punctate with fuscous, just behind middle broadly fasciate and at 

 apex fuscous. Membrane fuscous variegated with pale, at least along 

 the sides. Antennae usually have the basal segment, tip of the second 

 and third and more than apical half of the fourth segment ferrugin- 

 eous or fuscous, the pale basal ring of the fourth segment is quite 

 conspicuous. The legs are varial^le but generally the fore femora 

 except extreme base and apex and a preapical ring on the inter- 

 mediate and posterior ones, black. The dorsal parts, venter and 

 femora, provided with a sparse covering of long setose hairs. Fore 



