442 CLASS VIII. 
Family XXXIX. Geocorise (Aurocorisa Wrstw.). Antenne 
exsert, longer than head, inserted towards the inner margin of eyes. 
Tarsi with three joints, with first joint very short in some. Ros- 
trum often long, sometimes produced beyond the thorax. 
Mostly terrestrial Hemiptera; few aquatic, living on the surface 
of the water, or inhabiting the banks. 
Land bugs. This numerous family forms with Liynaus only one 
genus (Cimex), out of which, from the discovery of new forms and 
the more accurate distinction of the species formerly known, far 
more than 100 genera have already been formed by modern writers. 
Phalanx I. Oculata (Acanthtide Werstw.) Sheath of rostrum 
triarticulate. Feet long, slender, terminated by two long claws. 
Antenne quadriarticulate. Eyes large, protuberant. Ocelli two, 
in vertex. Head without distinct neck, separated by a small stric- 
ture from thorax. 
Salda Fapr., (in part) Burm., Acanthia Latr. Antenne fili- 
form, of the length of head and thorax. 
Sp. Salda littoralis Fasr. (and Lygeus saltatorius Fasr.), Cimex littoralis 
L. (and Cim. saltatorius L.), De Greer, Mém. mi. Pl. 14, figs. 17, 18; 
Wo rr, Wanzen, Tab. vu. fig. 74; this species leaps like a froth-cicada. 
Leptopus Latr. Antenne setaceous, nearly of the length of 
body, with third joint very long. Anterior feet spinose. 
Sp. Leptopus littoralis Latr., Cuv. R. Ant. éd, ill. Pl. 93, fig. 1, &e. 
Phalanx Hl. Hydrodromica. (Hydrometride Westw., Ploteres 
Lartr.). Sheath of rostrum triarticulate. Head almost of the 
length of thorax, without distinct neck. Ocelli sometimes none. 
Four posterior feet longer than anterior, formed for going on the 
water, inserted at the sides of thorax, remote from each other. 
Head ovato-oblong or linear, covered beneath with a silky down. 
Antenne moderate, filiform, quadriarticulate, and either with a 
single accessory joint, very short between the second and third, or 
with three, interposed between each of the others. T'arsi with two 
or three joints, the last joint shortest. 
A. Claws of tarsi inserted in a fissure at the inside before the 
extremity of last joint. 
