398 



Deutsch. Ent. Zeitschr. 1910. 



pieces there is a second pair of long hairs like the first 

 but only as long as the width of the body before the legs 

 The abdomen is deeply incised posteriorly, so that there are 

 tail pieces ; this incision is wide, rounded anteriorly and sli| 

 constricted in the middle. In this anterior rotundo there 

 hyaline narrow margin ; quite in the median line o 

 there is an extremely 



pair, 

 ; III. 



two 

 ^htly 

 is a 

 f it 



^ 



narrow canal. I had 







s^^ u. 



Fig. 20 — 21. Trouessartia trouessartl (Oudms.). $. 



ready treated the individual with caustic kali 

 as I examined it, so I did not observe anything 

 running through this canal, but on examining 

 the drawings which I possess of species of 

 Trouessartia IwsLS Struck by the presence of an 

 „appendiculum" like a sickle in Tr. appendiculata 

 (B erlese), which apparently com es forth out ofa 



