the genitalia of Insects as guides in Phylogcny. 305 



that ia the Chironoraid Tanypus monilis, L,, I have also 

 met with these pads of chitinous cilia in the genitalia, and 

 also have been unable to find an external opening of the 

 ejaculatory duct, but in this insect, unlike the Phoridre all 

 the parts are symmetrical ; the structure is so peculiar 

 that it may be one more of the numerous links connecting 

 the Phoridas with the Nematocera. 



TRANS. ENT. SOC. LOND. 1908.— PART II. (SEPT.) 20 



