2 24 KNTOMOLOGISK TIDSKRIFT 190I. 



is scarcely more than one half longer than thick, the subapical 

 joint only a little more than twice as long as thick. The three 

 proximal joints and the fifth, the seventh and the ninth joints 

 have a subapical whorl of proportionately long, glabrous setae; 

 the terminal joint with a subapical whorl of seven long plumose 

 setîe (fig. 2 1). 



Sexual characters. Female. The ventral surface of the 

 second abdominal segment with its lobe has together eleven (or 

 twelve) pairs of hairs (fig. 2 i and pi. 3, fig. i a); four pairs of 

 these are short and inserted at or on the margin of the lobe, 

 and four other pairs are arranged in two rows directed upward 

 and inward, thus converging forward; the lobe of the third seg- 

 ment — as usual — with two pairs of hairs posteriorly, and the 

 two terminal processes are close to each other, slender, with their 

 apex almost obtuse. — Male (pi. 3, fig. i b). The inferior part 

 of the second segment with the proximal part of tl c ijbe is 

 much thickened and adorned on the sides and especially in 

 front of the distal part of the lobe with five pairs of slender, 

 subcylindrical processes and two thick, distally rounded processes; 

 each of these fourteen processes terminates in a stiff seta, the 

 ventral surface of the segment has outside and in front of these 

 processes about eight pairs of hairs; the lobe of the third seg- 

 ment is deeply divided into two rather distant processes v.hich 

 are much thicker than in the female, and the lobe has posteriorly 

 and at the end four pairs of partially long hairs. 



Length. An adult female measured 1-25 mm. and its fla- 

 gellum -88 mm.; another female and an adult male are i-i8 

 mm. in length. 



Locality. At Austin, Texas, where it is common (W. M, 

 Wheeler, who in the paper mentioned above gives good infor- 

 mation (]). 848) on the natural conditions under which the ani- 

 mals live). 



3. Koenenia chilensis n. sp. 



PI. 3, fig. 2 a — 2 i. 



Materia). A single specimen is seen; it was sent to me 

 in three microscopical preparations (all with glycerine); one of 



