19()7i| 
JOH.ySOXSOME SORT II AMERICAS SYRPIIIDAE 
7!) 
Mack, while (lie two arcuate yellow spots on (he fifth se<;;inent are narrowly connected 
with the central trianj;le. Two s])eciniens from Mass, have only the basal third of 
(he front and middle femora blackish, the basal half of (he posterior femora bein'; 
brownish; in one the brown forms a conspicnons middle band. .\ specimen from 
Franconia, N. II., collected by Mrs. A. '1'. Slo.sson has the posterior femora, only 
slightly tinged with red towards the base; a similar sjiccimen was I’ollected at Folsom, 
Pa. Three specimens from Riverton, N. .1., show only a slight basal tinge of brown 
on the front and middle femora. 
(’huysotoxum K.vscioL.VTlAt IMeigeii. Syst. Heschr., Ill, 171, 1S22. 
In I'.tO.o 1 received from Mr. II. II. Newcomb a large f 'An/.voto.rnw (9), which 
he collected at Gold Rock (Rainy R. District), ( tntario, .Inly 21. While collecting 
on the sninmit of Mt. (ireylock, Ma.ss., .Inly l.o, I'.tOti, alt. o.od.o ft., 1 obtained after 
much difficulty, owing to their rajiid flight and habit of poising in (he air just out of 
reach of the net, a (5’ of the same species. Later 1 received from IMr. F. F'. Hitchings 
two specimens collected at Hancock, Me., in .Inne. d'hat it was a spci'ies new to onr 
fauna was readily a|)])arcnt, but its determination was another matter; a new ( '/oy/.vo- 
In.rum is not an inspiring thing, under existing conditions, and yon feel like putting 
off the evil day. 
An inspection of the I.oew collection at the Mn.senm of Comparative /.oology, 
through the kindness of IMr. Ilenshaw, revealed two specimens of this s])ecies, one 
marked “Mass.,” (he other “Can.” and labeled “ fa.'.riohilinn'! ”. Lately 1 have 
received a .s])ecimen of this European species from Dr. F. Hermann, and find no 
character to sc[)arate the American specimens. Why was it not included by Loew 
and ( )sten Sacken in the .\mericana fauna ? We can only account for it in this way, — 
Loew was describing only the new species. < )sten Sacken Tiiay have overlooked it, 
or [jerhaps seeing the name tpiestioned, thought it best to have its capture- verified. 
It is a conspicuous species measuring from R5-W) mm. in length, and readily 
distinguished by the wide black band extending entireiy acro.ss the scutelluiii, leaving 
only a narrow basal and a|)ical margin of yellow. None of the interru|)ted abdominal 
bands extend to the lateral margin, althotigh in one specimen and in the one from 
F.uro])e it is narrowly connected with the yellow at the |)osterior angle; the marking 
on the fifth segments might be described as a broad inverted Y. Rasal half of the 
front and middle femora black, of the posterior femora brown. 
