58 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



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 not similar 

 in size and shape, dexiotorma produced cephalad and caudad, laeo- 

 torma only produced cephalad. Crepide subquadrangular; epitorma 

 elongated and flattened apically. 



Maxillarj' stridulatory area with a row of 6-10 conical teeth; palpifer 

 with two or three teeth. Galea ventrally with a long seta and a 

 longitudinal row of 15-17 short setae, dorsally with five setae. 

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

 and one short seta posteriorly. 



Dorsal annulets of abdominal segments 1-5 with setation as 

 follows: Each prescutum with six short setae, each scutum with 

 five or six short setae and two or three long setae on each side, and 

 each scutellum with 11 or 12 short setae. Each abdominal spiracle- 

 bearing area with two setae ventrally and two setae dorsally. 



Easter with teges of 50-72 setae scattered on the venter of 10th 

 abdominal segment. 



Aphodius hamatus Say 



Material examined: Four third-stage larvae collected from 

 pasture at Ruby Valley, Elko County, Nev., Nov. 12, 1956, by Mark 

 Menke. 



Description: Maximum width of head capsule of third-stage 

 larva 2.87-3.00 mm. Cranium yellowish, surface smooth except for 

 three depressions in a line on each side on the frons, three or four 

 dorsoepicranial setae and sLx or seven microsensillae on each side. 

 First and second antennal segments subequal, third shorter than 

 first or second. Third antennal segment with a small conical sensory 

 structure apically. 



Epipharynx with protophoba bistichous on left and monostichous 

 on right; protophoba with 18-21 microsensillae. Tormae similar in 

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

 sub triangular; epitorma asymmetrical, slender, and flattened apically. 



Maxillary stridulatory area with a row of 9-12 conical teeth; 

 palpifer with one or two teeth. Galea ventrally \\ath a long seta and 

 a longitudinal row of 11-14 short setae, dorsally with five or six 

 setae. Lacinia dorsally with a row of eight long setae near the mesal 

 edge and one short seta posteriorly. 



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

 Each prescutum with 20-25 setae, each scutum with 14-18 short 

 setae and 7-10 long setae on each side, and each scuteUum with 30-35 

 setae. Each abdominal spiracle-bearing area with two setae ven- 

 trally and two setae dorsally. 



