( 546 ) 



22. Ctenophthalmus audax spec. nov. (text-figs. 17 and 18). 



In this species and C. triodonttis the bristles are more nnmerons thau iu any 

 other tropical African species. Ct. audax is differentiated from Ct. triodonim in 

 the S b)' the movable ])rocess of the clasper not being abrnptly dilated distally, 

 and in the ? by the basal abdominal sternite bearing a number of lateral bristles. 



Head. — The first and second genal bristles are much shorter and more obtnse 

 tlian the third, the second one being especially blunt. The frons bears two rows 

 of bristles and the occiput three rows. 



Thorax. — The pronotal comb consists of si.xteen spines. The two lower 

 bristles of the pronotal row are mnch closer together than the other bristles of the 

 same row. The mesopleura bear eleven or more bristles, the metepisternum has 

 three or four, the metasternum one or two, and the metepimerum thirteen to 

 sixteen. 



Abdomen. — The abdominal tergites I and II iu the i and I — VII in the ? 



Fig. 17. — Ctenophthalmus audax. 



have, like the metanotum, two complete rows of bristles, three or four bristles of 

 the posterior row being placed below the stigma, at least on segments II and III, 

 on segment II there is also a bristle of the anterior row placed below the stigma. 

 The sternites of segments III to VI bear in the S on each side a row of fonr 

 or five bristles, there being rarely a bristle in front of the row, in the ? the row 

 contains seven to nine bristles, and there are from four to six bristles in front of tbe 

 row, the basal sternites bearing in this sex three to six lateral bristles on each side. 

 Leqs. — The mid- and hindcoxae bear posteriorly near the apex one long and one 

 small bristle. The femora have no lateral bristles, except for a small one on the 

 inner surface of the forefemur. There are two subapical ventral bristles on the 

 mid- and hindfemora, and one such bristle on the inner side. This latter bristle is 

 long and thin, particularly on the hindfeniur, not being short and stumpy as in 

 European Ctenoplithalmus. The mid- and iiindtibiae have one row of bristles on 

 the outer surface near the dorsal bristles. The first hindtarsal segment bears one 

 or two ajjical bristles which reach to the apex of the second segment, and two 



