Ecological and Behavior Notes 51 



more than three hundred of these and their sister species, 

 Canthon laevis, in one eager group in the road. These 

 bearing the purplish tint predominated in number. 



Choeridium histeroides Web. [E. A. Schwartz]. Taken 

 near St. Louis, in human dung. May 10, 1915. 



Copris minuta Drury. [H. S. Barber]. This homed 

 dung-beetle was found in horse manure at Clifton, 111., 

 October 27, 1916. 



Copris anaglypticus Say. [E. A. Schwarz]. This beetle 

 was taken at St. Louis in cow-dung. May 15, 1915. Later, 

 at Wickes, on June 6, 1917, I dug up in a garden three 

 balls and a beetle of this species from a depth of twelve 

 inches. The balls were at first spherical, with only a 

 small prominence on one side making them slightly pear- 

 shaped. Later, by June 11, I found that on one of the 

 balls the bump had been much enlarged, having been 

 pushed out from the inside, leaving cracks in the crust 

 at that point. I refrained from opening the balls, in the 

 hope that the occupants would in time emerge, but in 

 that I was disappointed, for they slowly dried up. The 

 beetle lived an uneventful life in a can of earth with a 

 little manure until August 18. 



Onthophagus hecate Panzer. [E. A. Schwarz]. This 

 dung-beetle was found in St. Louis, burrowing under both 

 human and cow manure. 



Ataenius abditus Hald. [E. A. Schwarz]. Taken in 

 cow dung at St. Louis, April 15, 1915. 



Aphodiiis fimetarius Linn. [E. A. Schwarz]. Literally 

 thousands of these dung-beetles were to be seen burrow- 

 ing in the sand immediately beneath human excrement at 

 a camp at Castlewood, near St. Louis, on April 28, 1915. 



Aphodiiis granarius Linn. [E. A. Schwarz]. Taken in 

 cow manure at St. Louis, April 15, 1915. 



ApJiodius inquinatus Herbst. [H. S. Barber]. Very 

 abundant in and under horse manure October 27, 1916. 



Bolhoceros farctus Fabr. [E. A. Schwarz]. At Mer- 

 amec Highlands, Mo., in a space sheltered by a half dozen 



