164 INSECTA. 
Myopocna, Lat. * 
We have now arrived at Longilabra, in which the antenne, com- 
posed cf four joints, become gradually thinner towards the extremity, 
and frequently even abruptly so, or are setaceous. 
In our Fam. Nat. du Rég. Anim., we have formed the subgenus 
ASTEMMA, 
With certain species in which the antenne are gradually setaceous 
and where the second joint is of equal thickness and almost glabrous. 
The thorax is hardly narrower before than behind, and forms a trans- 
versal square, or is cylindrical; the head is as if incised perpendicu- 
larly or rounded at its origin f. 
Miris, Fab. 
Similar to Astemma in the antennz, but removed from it by the 
thorax, which is much wider posteriorly than before, and trape- 
zoidal ft. 
Capsus, Fab. 
A similar and trapezoidal thorax, but the second joint of the an- 
tenn is attenuated at base, and densely pilose, particularly towards 
the extremity, otherwise almost cylindrical and slender like the 
first §. 
Hetrerotoma, Lat. 
The Heterotame are very distinct from the preceding Insects, by 
the size and width of the two first joints of the antenne, and of the 
second particularly, which forms an elongated palette; the two last 
are very short |}. 
In the remaining Hemiptera of this family there are but two or 
three apparent joints “| in the sheath of the sucker; the labrum is 
short and without striz. The first joint of the tarsi, and frequently 
even the second, is very short in the greater number. 
Sometimes the legs are inserted in the middle of the pectus; they 
terminate by two distinct hooks which originate from the middle of 
the extremity of the tarsus; they can neither be used as oars, nor for 
running on the water. 
We then separate those species in which the rostrum is always 
straight, sheathed at base or throughout its length; where the eyes 
are of an ordinary size, and where the head at its junction with the 
thorax exhibits no appearance of an abrupt neck or strangulation. 
* See Lat., Gener., &c., and Encyc. Méthodique. 
+ The Saldz pallicornis, flavipes, Fab., and some other species, but in which the 
body is much narrower and longer, and somewhat more analogous in the head to the 
Myodoche. 
+ Fab., Syst. Ryng.; Lat. Ib. p. 124. 
§ Fab., Syst. Ryng.; Lat. Gener., Crust. et Insect., III, p. 123. 
|| Capsus spissicornis, Fab. 
4 Four in the Reduvii, but the first is very short, almost null. 
