1923] Notes on the Dipterous Family Cyrtidce 47 
Acrocera hubhardi Cole. There are several specimens of this 
species in the collection of the Calif. Acad, of Sciences and most 
of them are typical. Specimens taken at Crystal Lakes, San 
Mateo Co., Cal., June 25, 1916 (E. P. Van Duzee) have the 
scutellum entirely black and less yellow on the abdomen than 
in the typical specimens; vein R-1 is brown, the rest of the wing 
veins yellow, including the costa, the membrane hyaline. Other 
specimens were taken at Sisson, July 25 (E. P. Van Duzee), 
Santa Cruz, June 8 (Giffard) and Oakland, August, 1905 (E. P. 
Van Duzee), all in California. 
0 geodes alhicinctus Cole new name for 0. marginatus Cole 
which is preoccupied by 0. marginatus Meigen, a synonym of 
0. pallipes Latreille. The length, omitted in the original des- 
cription, is 4-4.5 mm. A series of specimens received from Mr. 
B. C. Cain, taken at Brentwood Lodge, Bear Lake Co., 
Idaho, Jul}^ 17, 1920, probably belong here but are not quite 
typical, the pile of the thorax not being unusually long; the 
femora are yellow on less than the apical third. The genitalia 
are distinct from 0. costatus, but no males of melampus were 
available for comparison. 
Ogcodes alhiventris Johnson. There is a male specimen in 
the collection of the Cal. Acad, of Sciences, taken at Livermore, 
Cal., August 1904 (F. X. Williams). The abdomen is largely 
white; the first segment of the abdomen has a large basal black 
spot, separated from the posterior margin by the white border; 
the second, third and fourth tergites have a narrow, transverse 
black band at the base and one of about equal size near the 
posterior margin, a black mark connects the bands on the second 
and third segments; the fifth segment has a narrow anterior and 
posterior black margin, the latter interrupted in the middle and 
not quite reaching the posterior margin. The venter differs 
from the typical description in having a basal black band on 
sternites 1, 4 and 5, a small round spot on each side on the second 
and third sternites. The length is 5.25 mm. The sex of the type 
is not given and the differences in color may be due to a difference 
in sex. 
