HANSEN: ON SIX SPKCIES OF KOK.NENIA. 22 T 



in two transverse rows (with three or four setaî in the anterior 

 row)-, besides between this group and the naked lateral part of 

 the segment two rather long and two short hairs, the long hairs 

 shortly removed from each other and the submedian somewhat 

 removed from the median group. The fifth segment has on its 

 ventral side four pairs of hairs, the two pairs nearest to the 

 middle are longer than the others, the distance between the two 

 hairs of the pair next to the median line is about twice as long 

 between one of them and the following hair. The sixth segment 

 has on the ventral side a median rather high protuberance ad- 

 orned with a« transverse somewhat arched row of six robust set^e, 

 which project downward and are curved forward; between this 

 protuberance and the side only two hairs. The three posterior 

 segments are without any median seta; the last segment has eight 

 setcTe in all. 



P'lagellum. It consists of thirteen joints and is moderately 

 robust (fig. I c). The first joint is without its basal subjoint 

 almost two thirds longer than thick, the subapical joint is two 

 and a half times longer than thick (fig. i e). The three proxi- 

 mal joints and the fifth, the seventh and the ninth joints have 

 a subapical whorl of proportionately long, glabrous setie ; the last 

 joint with a subapical whorl of four long sette. 



Sexual characters. Female. The ventral surface of the 

 second abdominal segment (fig. i b) has three pairs of hairs; a 

 single pair of shorter hairs is inserted at the margin of the 

 genital lobe, and this margin is adorned with four pair of hairs; 

 the two pairs nearest to the middle short, the two other pairs 

 very much longer. 



Length. An adult female measured 1-2 mm. without fla- 

 gellum, which seems to be somewhat longer than the abdomen, 

 but somewhat shorter than the whole body-. 



'-' Mr. B(iRNER writes: »Die Länge des angewachsenen Thieres (9) 

 schwankt zwischen '^l^ und i*/, mm. ohne das Flagellum, das ebenso lang 

 werden kann wie das Abdomen». The contracted specimen he lent me has 

 probably in natural condition been only little more than 75 mm., but the 

 flagellum, which is well preserved, is absolutely somewhat longer than the 

 abdomen, when this was straight. And (tRassi writes on the flagellum (j), 

 158): )da (juale è lunga presso a poco come il resto del corpe», which in all 

 probability is more correct than Mr. Burner's statement. 



29 



