PROC. ENT. SOC. WASH., VOL. 20, XO. ti, JUXE, 1918 119 



There was a very light flight on April llth due to except ionally 

 cool weather. During the day saw more T. antcricamix adults 

 feeding on Ilex casine bloom, also on wild tamarind (Lysiloma 

 bahamense) and on naked stopper (Anamomis dicrana) which is 

 just coming into bloom. 



There was another light flight on the morning of the 12th. 



On the 13th the sound of swarming was louder than on the t hree 

 previous mornings but not normal. 



April 14 the flight was much stronger, the weather was bright and 

 warm. I positively observed some flics inverted. 



On April 14 the junior author visited Paradise Key and noted 

 that during the day T. trijunctus was very common and annoying, 

 collecting in large numbers in auto tops and on the veranda screens. 

 T. americanus was not so common. T. lineola Fabr. was also 

 present. 



The weather was bright and warm on the morning of April 15. 

 The flight was increasing in strength and duration. I (Mosier) 

 made a careful canvas of palmetto bloom and found as many as 

 11 flies on one stalk, having two bloom spikes, 10 T. americanus 

 and 1 T. trijnuctus. Feeding did not begin immediately after the 

 flight but later on during the day till dusk. 



April 16th was warm and cloudy threatening rain. There 

 was a strong flight which lasted 18 minutes. I saw several pairs 

 of flies strike in mid air, but none came within collecting distance. 

 568 T. trijunctus were caught by opening the screen doors of the 

 lodge, among which were only 2 males; 8 T. americus 2 being 

 males; and 6 T. lineola, 1 being a male! I observed the males 

 feeding on palmetto bloom, also several resting on shrubs and 

 tree trunks near palmetto flowers. These darted out when others 

 came near, so that I could not determine whether the new arrivals 

 were females or not. 



The weather was warmer on April 17, the temperature being 

 68F. at Dawn. The flight was much stronger than last week; 

 fewer Hies were around the 'screens. I visited Timins Hammock 

 in the Redlands district 9 miles N.W. of Homestead, Fla. 

 and observed some adults of T. americanus but no T . trijunctus or 

 T. lineola Fabr. There are not as many gadflies in this hammock 

 as at Paradise Key (Royal Palm Hammock). Timins Hammock 

 is on higher ground in pine lands and the glades nearest to this 

 hammock are very dry and rocky, there being no saw grass slouu'lis 

 near and but little leaf mould on the ground which is very dry. 

 Rock sinks 12 feet deep show no water, whereas the water level at 

 Paradise Key is not more than 4 feet below the surface and the 

 jungle is very dense. Dr. Small has illustrations of this dense 

 hammock growth in a recent article 5 on Florida ferns. 



1 Small, J. K. Ferns of Tropical Florida." The Aincr. Mus .Imir ., 

 Vol. XVIII, No. 2, February 1!)1S. 



