On Scent-organs (?) in Female Midges. 365 



Length about 13 mm. Ocelli absent. Body creamy 

 white (i. e. without general pigment), but marked on either 

 side with a row of yellow to reddish-brown spots which are 



lacking on the five front body-segments. The body is 

 sparsely furnished with relatively long hairs. 

 Types in the Brade-Biiks collection. 



In the field the most noticeable difference between T.guttu- 

 latus and the new species is the paleness of the latter. In 

 T. guttulatus the dark spots which run down either side of 

 the body are very conspicuous, whereas the corresponding 

 rows of yellow to reddish-brown spots seen in P. pallidus are 

 hardly visible to the naked eye. 



S.E. Agricultural College, 



Wye, Kent, 



21st July, 1920. 



XLL— Scent-organs (?) in Female Midges of the Palpomyia 

 Group. By F. W. Edwards. 



(Published by permission of the Trustees of the British Museum.) 



During the first half of June of this year, while staying 

 near Dartmouth, I noticed on several successive evenings a 

 swarm of flies which I at first took to be the males of a rather 

 large Chironomus, such as C. dorsalis, Mg. On netting 



