320 Trans. Acad. Sct. of St. Louis 
Mis.—The social short-tongued bee flowers are 8.9% of 
the flowers and show 26.4% of the visits. Of the visits 
to this class, the lower Hymenoptera show a maximum 
of 28.2%, the flies with 27.0 and the Lepidoptera with 
23.1. Of the visits of the flies, lower Hymenoptera and 
short-tongued bees, 39.9, 36.5 and 28.8 are to this class. 
Mis shows maxima of Xylocop, Collet, Lycaen, Sphee, 
Bembie, Crabron, Philanth, Syrph, Conop, Stratiomyidae. 
Pol.—The polytropic flowers are 5.3% of the flowers 
and receive 24.4% of the visits. Of the visits to this class, 
the flies show a maximum of 37.2, the lower Hymenoptera 
with 33.4. Of the visits of the flies and lower Hymenop- 
tera 47.0 and 39.8% fall under Pol. 
Cases referred to Pol on account of the species of vis- 
itors may be shown to belong to Mis when the individuals 
are counted. In Fagara clava-herculis the short-tongued 
bees forming 9.3% of the families, were 48.5% of the 
individuals. 
Pol shows maxima of Eumen, Pompil, Oxybel, Tiphi, 
non-aculeata; Tachin, other Calyptratae, total Muscoidea, 
total flies, lower Hymenoptera, Coleoptera, Hemiptera. 
Social and non-social flowers —While the social (Mas, 
Mis, Pol) are only 25% of the flowers observed by me at 
Inverness and Orlando, they receive 59.2% of the visits. 
Of 437 flowers observed at Carlinville, Illinois (8, 158), 
the social, 45.4% of the total, received 78.9% of 13,971 
pollinating visits. The differences are 34.2 and 33.5. 
Couors. 
Red.—Red flowers are 32.1% of the flowers observed 
and receive 23.8% of the visits. Of the visits to red, the 
Lepidoptera made 49.2%. Red shows maxima of Eucer 
and Megachilidae. 
