32 Trans. Acad. Sci. of St. Louis 
The Main Subdivision at Evanston, where the most extensive 
observations were made by the present writer, had, in the winter 
of 1925-26, great quantities of Agropyron repens (quack grass), 
Setaria (foxtail) and Amaranthus (pigweed) all of which had 
been allowed to mature seeds. Of this the seeds of the quack 
grass were eaten first and wherever their long stems had fallen 
over the sidewalks the Larks would invariably be found in 
January and February. When quack grass failed, foxtail was 
eaten, and lastly Amaranthus substituted when no other seeds 
were available. Plate IV, Fig. 1, is a photograph showing results 
of Lark activities about a clump of Amaranthus after a March 
snowstorm. Once or twice Larks were noted along the roads 
feeding on the oats of horse droppings, when snow covered up 
all the weed seed of the subdivision. And again at Ithaca the 
compost heaps, put out for fertilizer along the garden margins, 
supplied some food when snow lay deeply over the ground. 
At Ithaca, during the spring of 1927, Prairie Horned Larks 
were observed feeding on Setaria (March 1), on Ambrosia 
artemisiaefolia April 1; a pair of Larks were frightened away 
from an Arctiid moth larva (Apantisis arge) which I observed 
the female dig up, March 3. Finally a few adults were collected 
in March at Ithaca (Connecticut Hill) and examination of 
stomach contents gave the following results: 
1. Female, March 6, collected about 6:00 P. M. 
Vege Ne 8 es ss ee eee 98% 
PAN) oss es ee 10% 
capped Sigs = SO0GS) os oe es 88% 
MIA) Wentiee: SS ee ies aes % 
bits 4 t iT as a 1% 
SROGt Hectie (ol). 495534 oe 1% 
2. Female, March 11, collected about noon. 
Boge UREEOP Soi oy oes epee 95% 
kewheat (one whole grain and many 
PR ae aes ra are ee 90% 
Polygon aa persicaria (four seeds)...... 5% 
Be 8 ee ee ee ee 5% 
3. Male, March 11, collected about noon, 
wetocenie MOnitG? |. Ss se ns es 100% 
ie (One erat) 2 se es 5% 
Setaria, two species (46 seeds)......... 95% 
4. Male, March 11, collected about noon, 
eines Na i eins 100% 
Daskivhoat _esemante of grains)... .<. 10% 
erares (00 gies)... 6s 90% 
