1924 ] 
New Calyptrate Diptera from New England 
201 
This species is most nearly related to caroli Malioch to 
which it will run in my published key to the species already 
referred to. That species differs, however, in having the frons 
wider and, except for the orbits, black instead of white, the 
orbits with more numerous and stronger bristles, the legs strong- 
er, and the fore tibia with a fine median posterior bristle. 
The European species pollinifrons Stein, like caroli, has the 
cheek not higher than width of third antennal segment, and 
though the frons is white there is no anteroventral bristle on the 
hind femur, the last character being used as diagnostic in Stein^s 
key to the European species. 
Spilogona alticola Malioch, 
This species is remarkably close to contractifrons Zetterstedt, 
to which it runs in all the keys to the European species which I 
have seen. To make certain of the specific status of the species 
I have dissected the male genitalia of both and present figures 
herein to illustrate their distinctions (Figs. 2 and 3). It is almost 
impossible to separate the species by the use of external charac- 
ters. Staeger and Lundbeck have recorded contractifrons from 
Greenland but the records are probably erroneous. 
Stein has recorded the closely releTed European species 
haltica Ringdahl as occurring in North America. The record 
should be confirmed by a comparison of the male genitalia of 
specimens from these continents before acceptance. 
Spilogona novae-angliae Malioch 
This species is very closely related to hrunneisquama Zetters- 
tedt (armipes Stein) which has been recorded from Washington 
State by Stein. I have dissected male specimens of both species 
and present figures of the hypopygia to show the specific dis- 
tinctions (Figs. 4 and 5). Externally the species are almost the 
same and it is possible that Stein had novce-anglice and not 
hrunnesisquama before him; an examination of his specimen is 
necessary to decide this, however. 
