64 PROCEEDINGS OF THE NATIONAL MUSEUM voL.m 



long setae and three or four short setae on each side, and each scutellum 

 with eight short setae. Each abdominal spiracle-bearing area with 

 two setae ventrally and one seta dorsally. 



Raster with teges of 17-22 setae arranged more or less in four rows 

 on the venter of 10th abdominal segment. 



Aphodius lividus (Olivier) 



Figure 63 



Material examined: Ten third-stage larvae, associated with 

 adults, collected in cow manure at Dallas, Tex., Sept. 9, 1907, by 

 F. C. Pratt (associated adults determined by E. A. Schwarz) (USNM). 



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

 1.25-1.35 mm. Cranium yellowish, surface smooth except for two 

 depressions on each side on the frons, three dorsoepicranial setae and 

 two microsensillae on each side. First antennal segment longer than 

 second or third, second and third subequal. 



Epipharynx with protophoba bistichous on left and monostichous 

 on right; protophoba with 17-19 microsensillae. Tormae similar in 

 size and shape, both tormae produced cephalad and caudad. Crepide 

 subtriangular ; epitorma asymmetrical and flattened apically. 



MaxUlary stridulatory area with an irregular row of 8-12 conical 

 teeth ; none on palpifer. Galea ventrally with a long seta and a lon- 

 gitudinal row of eight short setae, dorsally with five setae. Lacinia 

 dorsally with a row of five long setae near the mesal edge and a short 

 seta posteriorly. 



Dorsal annulets of abdominal segments 1-5 with setation as follows: 

 each prescutum with eight short setae, each scutum with two or three 

 long setae and four or five short setae on each side, and each scutellum 

 with 12 short setae. Each abdominal spiracle-bearing area with two 

 setae ventrally and one seta dorsally. 



Raster with teges of 27-42 short setae curved at their distal ends, 

 four minute setae anterior to the other setae. Tegillar setae scat- 

 tered irregularly on the venter of 10th abdominal segment. 



Aphodius troglodytes Hubbard 



Figure 15 



Material examined : Five third-stage larvae collected at Crescent 

 City, Fla., Jan. 29, 1893, and June 1894 by Hubbard (USNM). 



Description: Maximum width of head capsule of third-stage 

 larva 0.86-0.89 mm. Cranium light yellow, surface smooth except 

 for three small depressions in a line on each side on the frons and two 

 dorsoepicranial setae and one microsensiUa on each side. First an- 

 tennal segment longer than second or thud, second and third sub- 

 equal. Third antennal segment with a flattened sensory area apically. 



