56 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



Kaster with two short longitudinal palidia, surrounded on the sides 

 by 51-55 hamate setae. Raster with 14-18 caudomesally directed 

 pali. Tegillar setae arranged in more or less regular rows, with 

 varying number of setae in each row. Two minute setae anterior to 

 other setae. 



Aphodius fossor (Linnaeus) 



Figures 16, 17 



Material examined: Two third-stage larvae collected at Riverton, 

 N.J,, June 1930, labeled by Sim (FOR); nine third-stage larvae and 

 four second-stage larvae collected in cow dung at Hyannis, Mass., 

 June 27, 1939, by W. H. Anderson (USNM). 



Description: Maximum width of head capsule of third-stage larva 

 3.26-3.68 mm. Cranium light reddish brown to dark reddish brown, 

 surface smooth except for two depressions on each side on the frons, 

 four dorsoepicranial setae and two microsensillae on each side. First 

 and second antennal segments subequal, third shorter than first or 

 second. Third antennal segment with a small conical sensory struc- 

 ture apically. 



Epipharynx with protophoba bistichous on left and monostichous 

 on right; protophoba with 15-18 microsensillae. Tormae not similar 

 in size and shape, dexiotorma produced cephalad and caudad, 

 laeotorma only produced cephalad. Crepide sub triangular; epitorma 

 asymmetrical, slender and flattened apically. 



Maxillary stridulatory area with an irregular row of 16-21 conical 

 teeth; palpifer with 4-7 teeth. Galea ventrally with a long seta and 

 a longitudinal row of 18-22 short setae, dorsally with eight setae. 

 Lacinia dorsally with a row of nine long setae near the mesal edge and 

 one short seta posteriorly. 



Abdominal segments 1-5 each with three dorsal annulets; each 

 prescutum with 12 short setae, each scutum with 2-5 long setae and 

 5-8 short setae on each side, and each scutellum with 16 short setae. 

 Each abdominal spiracle-bearing area with three setae dorsally and 

 three or four setae ventrally. Claws slender, pointed, and with 

 only blunt nodule at the insertion of the setae. 



Raster with teges of 130-165 small setae arranged more or less in 

 rows with varying number of setae in each row. 



Aphodius fimetarius (Linnaeus) 



Figures 5, 14, 28, 42, 43, 52, 76, 82 



Material examined: Four thu-d-stage larvae collected and reared 

 m cow dung at Urbana, 111., May 28, 1931, by Carl Mohr (USNM); 

 22 third-stage larvae collected in cow dung at Nashville, Ark., Apr. 7, 

 1937, by W, H. Anderson (associated adults determined by E. A. 



