HANSEN: ON SIX SPECIES OK KOENENIA. 23 1 



inserted equidistant from the base and tlie middle of the joint 

 and reaches very little beyond its distal end; the first tarsal joint 

 is one fourth shorter than the second. 



Abdomen (ùg. 3 f). \'entral sacs are wanting. Fourtli and 

 fifth segments on tlie ventral side with four pairs of long and 

 two pairs of short hairs, the sixth segment with only three pairs 

 of rather long and two ])airs of short hairs; in all three segments 

 the long hairs are on each side arranged regularly in a trans- 

 verse line, and the distance between the hairs of the pair next 

 to the median line is scarcely twice as long as between two of 

 the hairs on the same half The three posterior segments have 

 no seta in the median line: the last segment has only seven setae, 



F läge Hum. It is wanting in my specimens, but the dra- 

 Aving given me by Dv. Silvestri and inserted on p. 211 conveys 

 a satisfactory idea to the reader. Tlie fiagellum is very robust 

 and contains only nine joints. The three proximal joints and 

 the tifth and the seventh joints possess a subapical whorl of com- 

 paratively long glabrous setœ, while the fourth, the sixth and 

 the eighth joints have a subapical whorl of much shorter set;«; the 

 terminal joint as in A. mirabilis with two whorls of very long 

 setae, those in the subapical whorl as usual shorter than the 

 others. 



Sexual characters. — Female (fig. 3 f). The ventral sur- 

 face of the second segment is adorned v.'ith seven pairs of longer 

 hairs, the anterior pair is inserted considerably in advance of 

 the second, and on each side four of the hairs are arranged al- 

 most in a row which is very oblique, directed forward and 

 strongly towards the median line. Besides four pairs of short 

 hairs at the end of the sexual lobe. 



Length. The adult female is only -65 nun. long. 



Locality. Tacuru Pucii (Alto Parana, in Paraguay), July 

 I goo (Dr. F. Silvesiri leg.). 



Postscript. 



In October a colleague showed me a note in »Nature» for 

 Sept. 26. 1 90 1, where it was stated that Miss A. Rucker had 



39 



