INSECTA. 445 



Holoptilus. LEPELETIER and SERV. Antennae long, hirsute. 

 Feet pilose, posterior tibiae very hirsute. Tarsi large. Body de- 

 pressed, with broad elytra. 



Sp. Holoptilus ursus LEPEL., DE LAPOETE, GUER., Mdgas. de Zool. 1832, 

 Ins. PI. 54, fig. i ; Cuv. R. Ani., ed. ill., Ins. PI. 92, fig. 2. In the habitus 

 this genus approaches to Tingis. 



Sub-genus ; Ptilocnemus WESTWOOD. 



Phalanx IV. Membranacea (Cimicidce and Tingidce WESTW.). 

 Sheath of rostrum triarticulate. Rostrum received in a sulcus be- 

 neath the head. Antennas quadriarticulate. Tarsi with three 

 , joints or two. Body oval or suborbicular, depressed. 



A. Antennas setaceous, with last two joints slender. 

 Acanthia FABR., Cimex LATR. 



Sp. Cimex lectularius L., DE GEER, Mem. in. PI. 17, figs. 9 15; SCHEL- 

 LENBERG, Cimic. Tab. vi. fig. i ; DUMER. Cons. gen. s. 1. Ins. PI. 37, fig. 

 2; de weegluis, la punaise, die Bettwanze, the bug; 2^'" long, wingless, 

 brown-red, with short felty hairs, head small, thorax broad and short.. 

 This, too well-known, insect is able, according to the observations of DE 

 GEER and LEON DUFOUR, to live for a long time without food 1 , and is not 

 killed by the severest cold of winter, but revives on the first warmth from 

 its torpor. This species would seem, according to SCOPOLI, also to occur 

 winged; but here, in all probability, we have another species before us, 

 which SCHILLING described as Cimex domesticus in 1833 (OKEN'S/SW, 1834, 

 s - 738> 739 2 ). There are still other species (wingless) on pigeons, bats and 

 swallows, which JENYNS has described and figured; Annals of Nat. Hist. 

 m. 1839, p. 241, PI. i. 



B. Antennae filiform or thicker towards the apex, 

 t Feet all similar, ambulatory. 



Aradus FABR. Antennae filiform. 



Sp. Aradus depressus FABR., SCHELLENBERG, Cimic. Tab. v. fig. 2 (Coreus 

 spiniger), WOLFF, Wanzen, Tab. xni. fig. 123; lives under the bark of 

 trees. 



Note. Here seems to belong the genus Phlea LATR. 

 Tingis FABR. Antennae capitate. 



1 LEON DUFOUR found three bugs, which were enclosed in a glass, to continue alive 

 without food for a whole year. 



2 A species of Xylocoris DUFOUR, according to BURMEISTER. 



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