142 Journal OF THE ]\IiTciiELL Society |-V(/// 



Appendages. The following appendages, compound eyes, an- 

 tennas and mouth parts especially the labrum-epipharynx and labium 

 are usually conspicuous. The compound eyes are sub-hemispherical 

 in shape and usually crescentric in outline with a ventral sinus for 

 the reception of the antenna? but occasionally, as in Bothriocera, the 

 sinus and antennae are anterior in position. 



The antennae consist of two segments with a terminal flagellum. 

 The comparative lengths of the two segments of the antenniB are fre- 

 quently useful as is the shape of these segments. The first segment 

 is usually shorter than the second and is frequently set in a distinct 

 socket and more or less surrounded by a collar-like projection of the 

 genae, the antennal collar. Usually the first segment is more or less 

 terete or frequently it is widened distally and more or less club-shai")ed. 

 In a few cases the first joint is much flattened (Bostcera). The sec- 

 ond joint is usually club-shaped, sometimes flattened and more or less 

 studded with sensory organs. The number and arrangement of these 

 sensory organs furnish excellent characters as pointed out by Hansen 

 long ago, but their examination requires a rather high power and for 

 that reason they have not been much used. The flagellum is usually 

 longer tlian the two segments of the antennie combined. It consists 

 of an enlarged spherical basilar portion, the basal segment and a 

 distal portion, the bristle. The bristle of the flagellum is gradually 

 attenuated. In Otiocerus the antenna are provided with two or three 

 vermiculate appendages of unknown function. 



The mouth parts are of the usual haustellate homopterous type. 

 The epipharynx is small and sharply pointed and lies in the groove 

 of the labium. It is not always distinctly separated from the labrum. 

 The labium is long or short and consists of four segments. The basal 

 and sub-basal segments are closely applied to the gular surface of the 

 head and are not visible from the frontal view. The apical and sub- 

 apical are usually unequal in length, the apical being short and the 

 subapical long. The length of the labium is frequently a good generic 

 character but is seldom of any value as a specific character. 



Thoracic Regions. The typical regions of the thorax are some- 

 what modified in the FuUjorida;. The pro- and mesonotum are con- 

 spicuous but the metanotum is hidden by the wings when at rest. 

 The propleura are covered by the lateral extensions of the pronotum, 

 the breast plates, but the meso- and metajileurs are (piite distinct. 

 The sternites are small. 



