166 
Psyche 
[October 
Red shows 31.3 per cent of the flowers visited and 19.8 per cent 
of the visits. Yellow shows 33.7 per cent of the flowers. Nine 
prefer Mas, five Mis, two Mi, ten yellow, four white and two red. 
Before July they prefer Mas, Pol and red; after June, Mas, Mis 
and yellow. The maxima shift from Hb 35.7 to B' 66.6, red 
39.2 to yellow 55.8. The heterotropy is given in 7 , 172-3. 
Halictid^d (ex. Sphecodini). — Of 1840 visits to 287 flowers, 
41.8 per cent are to Mis, 28.5 to Mi, 51.3 to white, 33.4 to yellow 
and 21.6 to Compositse. Mis shows 30.3 per cent of the flowers 
visited. Visits of females show Mi 30.8, Mas 13.4; of males. 
Mi 10.0, Mas 27.1. Visits to red are 15.2 per cent. Low Germany 
35.6 and Berlin Garden 38.0. 
Loew (2,71) calls Halictidse males oligo tropes of B . The 
males begin to fly about June 4 and are limited mainly to flowers 
observed after June, when the Halictidse in general make a 
smaller percentage of visits to B' than any other short-tongued 
bees, except Prosopis. The percentage of visits to B' after June 
is for the females 36.3, while that for the males is 39. The 
females make pollen visits to many deep tubed Compositae on 
which the males do not occur. 
Sphecodini . — Of 111 visits to 57 flowers, 54.9 per cent are to 
Mis, 33.3 to Pol, 63.9 to white, 35.1 to yellow, 27.9 to Umbelli- 
ferse, 18.9 to Compositse, and 10.8 to Labiatse. Visits to red are 
0.9 per cent, in Low Germany 26.7. 
Halictidce -. — Of 1951 visits of the Halictidae in general, 42.5 
per cent are to Mis, 27.5 to Mi, 52.0 to white and 33.5 to yellow. 
Of 165 non-pollinating visits, 53.7 per cent are to Ma, 37.5 to 
Mas and 52.1 to red. Forty prefer Mis, six Pol, six Mi, three 
Mas, 38 white, 17 yellow and only one red. Before July they 
prefer Mis, Pol, Mi, yellow and white; after June, Mis, Pol and 
white. The maximum shifts from AB 37.2 to B 37.6. 
Andrenidce . — Of 585 visits to 133 flowers, 59.6 per cent are 
to Mis, 54.4 to white, 40.0 to yellow, 18.6 to Rosacese, 15.7 to 
Salix, 12.8 to Umbelliferae and 11.4 to Compositse. Mis shows 
37.5 per cent of the flowers visited. Red shows 5.4 per cent of 
local visits, in Low Germany 26.0 and Berlin Garden 46.7. 
Thirty-seven prefer Mis, four Mas, four Ma, four Mi, 28 white, 
