96 MORPHOLOGY, ETC., OF THE MICROPTERVGIDiE, i., 



all Micropterygidce was demonstrated (9), was first published 

 before I received either of the above works; in actual date of 

 publication (March, 1918) it was later than Dr. Chapman's 

 paper, but earlier than Professor Comstock's book. The dates 

 of all three were, however, close enough together to prevent the 

 knowledge contained in any one of them from being used by 

 either of the other authors. Had this been possible, I do not 

 doubt that the views of each of us would have been profoundly 

 modified by the work of the other two. 



As instances of this, I would mention the unfortunate selec- 

 tion of the name Zeugloptera for the new Order proposed by Dr. 

 Chapman. The name was suggested by Mr. Durrant, from the 

 Greek (et'-y/W/ = jugum. Had either Dr. Chapman or Mr. Durrant 

 known of the existence of the frenulum in these insects, this 

 name, at any rate, must have been barred; as it is, it is a most 

 unfortunate choice. Again, Professor Comstock says, in justifi- 

 cation of his removal of the Micropterygidce to the Order Tricho- 

 ptera(3, p. 318) : — " If the Micropterygidce be retained in the 

 order Lepidoptera, they must be considered the most generalised 

 members of the order, being near the stem form from which the 

 Trichoptera and the Lepidoptera have been evolved. This view 

 necessitates the explanation of the manner in which the Hepia- 

 lidce, with their peculiar jugum, and the Frenatse were evolved 

 from a form having a well-developed fibula, like that of Mnemonica 

 and Rkyacophila. This must be done if the Lepidoptera, including 

 the Micropterygidre, is to be shown to be a monophylitic group." 

 As the explanation here asked for was actually given in my work 

 on the Panorpoid Complex, Part i.(9), it is quite clear that Pro- 

 fessor Comstock's decision would have been materially affected 

 if my paper had been available to him. On the other hand, my 

 own results would have been altered to some extent, if I had had 

 access to his account of the jugal lobe of Mnemonics (3, p. 315), a 

 genus of which I had very little material. 



The Micropterygidce have long been of especial interest to 

 entomologists, but it does not appear that any study of their 

 internal organs has yet been carried out; and the present con- 

 dition of our knowledge of the family is wholly due to the study 



