119 



white line; the first and the eleventh tergites are only seldom divided in their 

 whole length; this line is most visible in forms with dark abdomen. The srlerites 

 of the abdomen are seldom completely smooth, most often granular, but their 

 granules are as a rule less prominent than those of the céphalothorax and more 

 similar to scales. Along the hindmost margin of the tergital sclerites or just behind 

 we find a row of hairs, which are never completely simple and in their structure 

 like those of the céphalothorax; the tergites from the fourth to the tenth bear, in 

 addition to this marginal row, a different number of hairs in front of the row; the 

 hairs of the tergites increase in length as well as in number towards the lip of 

 the abdomen. The tenth and eleventh tergites most often bear a single or two 

 pair of "tactile" hairs each. The last eight sternites are in most respects similar 

 lo the tergites, but the longitudinal line is very indistinct, the granulation is less 

 marked, and the hairs are more simple, and distinctly longer; the armature of the 

 sternites of a few species with short spines provides sometimes a sexual as well as 

 a specific character of value (cf. p. 129). The membrane between the tergites and 

 sternites show distinctly the limitation between the segments, at least behind. The 

 sexual area of the females seems to be alike to that described by Croneberg in 

 C/i. cimicoides F. (45. p. 448), and does not provide marked variations in contrast 

 to that of the males, which is to a degree variable within the dilYerent groups and 

 accordingly will be dealt with separately later on (cf. pp. 121— 124). 



Antennae. — The structures of the antennae are pretty much alike in the 

 different forms, at least compared with those of the Garypidae Hans.; the flagellum 

 (PI. IV, fig. 4 a, /■) consists of three or four hairs, decreasing backwards in length 

 as well as in breadth, and simple with the exception of the foremost, which has 

 the anterior margin dentated; only a single species is known in which the other 

 hairs as well bear teeth, namely Ch. rudis Balz. (46. tav. 14, fig. 9 a). The lamina 

 interior is the only organ, found in the antennae, which shows a structure of its 

 own, not found completely similar in any of the Garypidae Hans, examined in this 

 respect; it is characterized by its wide, transversely striated, plate-shaped portion, 

 which is distally folded in a complicated manner and connected with the serruli- 

 formed part; this latter consists of from three to five dentated lobes, placed 

 obliquely to the axis of the finger, and each covering the anterior margin of the 

 preceding (more proximal) tooth with its own posterior margin (PI. IV, figs. 4 a-b), 

 as well as of a terminal spine, serrated along margin and fused with terminal lobe 

 (cf. p. 21). The serrula exterior has the basal tooth the longest and widened out 

 terminally, and the terminal partly free and sometimes pointed, or in similarity 

 to the rest more or less obtuse (PI. IV, figs. 2a-4c). The galea of the female is 

 either fairly long or very long, with a few branches or with a number: in the 

 male it is generally shorter and more simple (PI. Ill, figs. 8d-e; pi. IV, figs. 4 c-d). 



Maxillae. — The maxillae gradually taper towards the manducatory pari, 

 which is fairly long and surrounded by a broad lamina maxillaris. The maxillae 

 show in Ch. Murrayi Poc. a systematic as well as a sexual character of great 



