PSYCHE 



VOL. XXIII APRIL, 1916 No. 2 



FURTHER STUDIES ON THE PLATYPEZID.E. 



By Charles W. Johnson. 

 Boston Society of Natural History, Boston, Mass. 



Since publishing a "Revision of the Species of Agathomyia" 

 (Psyche, Vol. 17, p. 7, February, 1910) material has accumulated 

 which I have put aside year after year, hoping that in time I should 

 have sufficient material to show satisfactorily the positive relation 

 of the sexes of what are probably the male and female of the same 

 species. The notes appended to the following description will 

 show the difficulties attending this work, the results of which, after 

 six seasons of careful collecting, being rather discouraging. It is 

 therefore with great misgivings that I name some of the described 

 forms, but by so doing, if synonyms should arise, they can be more 

 clearly and readily relegated to their proper standing, than by 

 referring them doubtfully to described species. 



Agathomyia Verrill. 



Table of Species 



1 . Thorax and abdomen fulvous 2 



Thorax and abdomen largely black 4 



Thorax and abdomen cinereus (females) 8 



2. Without black on the abdomen, 9 (Me., N. H.) ... ./w/va Johns. 

 With black on the abdomen 3 



3. The last two segments of the abdomen and halteres black, cf 



(N. Y.) perplexa sp. nov. 



The last segment of the abdomen, pleura and metanotum 

 black; halteres yellow, cf" (Mass.) duhia sp. nov. 



4. Abdomen broadly banded with yellow 5 



Abdomen not banded with yellow 7 



