66 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



with two setae ventrally and one seta dorsally. Abdominal segments 

 7-9 broader than the other segments. 



Raster with teges of 51-81 short setae scattered irregularly on the 

 venter of 10th abdominal segment. 



Aphodius pectoralis LeConte 



Material examined: Three third-stage larvae and cast skins of 

 seven third-stage larvae reared to the adult stage, collected under deer 

 droppings at Kiwanda dunes, Pacific City, Oreg., Aug. 7, 1955, by 

 Mrs. D. McKey Fender (reared adults determined by O. L. Cart- 

 wright) . 



Description: Maximum width of head capsule of third-stage 

 larva 1.32-1.35 mm. Cranium yellowish brown, surface smooth ex- 

 cept for one depression on each side on the frons, three dorsoepicranial 

 setae and three or four microsensillae on each side. First, second, and 

 third antennal segments subequal. 



Epipharynx with protophoba bistichous on left and monostichous 

 on right; protophoba with 16-18 microsensUlae. Tormae similar in 

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

 sub triangular; epitorma asymmetrical, flattened apically and little 

 bent towards laeophoba. 



Maxillary stridulatory area with an irregular row of 9-12 conical 

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

 tudinal row of nine or ten 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 sLx short setae, each scutum with three or four 

 short setae and three or four long 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 57-68 short setae scattered irregularly on the 

 venter of 10th abdominal segment. 



Tribe Eupariini 



This tribe is represented in the United States by 8 of the 14 known 

 genera — Evparia Serville, Ataenius Harold, DicUytes Harold, Ewpa- 

 rixia Brown, Pseudataenius Brown, Saprosites Redtenbacher, Dia- 

 lytellus Brown, and Aphotaenius Cartwright. Euparia, Euparixia, 

 Pseudataenius, Saprosites, and Aphotaenius are represented by single 

 species only. 



Species dealt with in this study mclude Aphotaenius carolinus (Van 

 Dyke), Saprosites pygmaeus Harold, Euparia castanea Serville, and 12 

 species of the genus Ataenius. 



