l8o KANSAS UNIVERSITY QUARTERLY. 



ent one. Six generic and eight specific names have been applied to- 

 il. The genera are the old composite genus Tachina, Gonia, Spall- 

 anza/iia, Isomer a R.-D. { = Gonia), Cnephalia and Pseudogonia. 



As a further introduction to a discussion of some of the generic 

 characters used to distinguish Gonia and related gervera, I will insert 

 a slightly modified translation of Brauer and Bergenstamm's table of 

 their Section Gonia as follows: — 



Head swollen, front and cheeks broad, ocellar bristles reclinate, 

 arista distinctly three jointed, often geniculate, the second joint 

 more or less elongate; vibrissas not ascending above the middle of 

 the face; first posterior cell ending before the tip of the wing. 



Section Gonia. 



I. — Proboscis normal 2 



Proboscis strongly elongate, setiforin Rhynchogonia B. B. 



2. — Claws of male and female short; arista distinctly three-lointed, 

 geniculate, two orbital bristles in each sex; third joint of an- 



tenncX in each sex longer than the second Gonia Meigen. 



Claws of male elongate, sometimes only of the front feet 3 



3. — Arista geniculate, first joint short, second elongate, almost as 

 long as the third; no orbital bristles in the male, in the female 



two Pseudogonia B. B. 



Second joint of the arista much shorter than the third, arista 

 rarely geniculate (female) 4 



4. — Orbital bristles in each sex two Onychogonia B. B. 



Orbital bristles in the male none, in the female two; second joint 

 of the arista much shorter than the third, arista not geniculate, 5 



5.— Third joint of antennae twice as long as the second; second joint 

 of the arista three or four times longer than wide. 



Spallanzania Rond. 



Third joint of antenna shorter than the second (male), or a little 



longer (male, female). Second joint of arista hardly longer 



than wide, a little thickened Cnephalia Rond. 



He also adds that Eucneahalia Towns, is near Spallanzania If it 

 has recliaate ocellar bristles. An examination of the type shovvs that 

 these are present. 



GONIA. 



With regard to the characters assigned above to Gonia, the- first 

 one which is given the distinctive position in the table, is by no 

 means constant, as has been observed by Williston in the work prev- 

 iously cited on Gonia, wherein he says, speaking of Gonia exitl Will., 

 that certain males from California which he could not separate, harl 

 the claws and pulvilli very large. I have these specimens now before 

 me, as well as other long-clawed males from Estes Park, and Mani- 

 tou Park, Colorado, of the same species. The species has the third 



